Home / 7,477.81-10,318.55-4,290.25

Finding the Fourth Proportional to 7,477.81, 10,318.55 and 4,290.25

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Solution

The fourth proportional to 7,477.81, 10,318.55 and 4,290.25 is: 5,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.81 : 10,318.55 = 4,290.25 : x
  2. Step 2: Convert to fraction form
    7,477.81/10,318.55 = 4,290.25/x
  3. Step 3: Cross multiply
    7,477.81x = 10,318.55 × 4,290.25
  4. Step 4: Simplify right side
    7,477.81x = 44,269,159.14
  5. Step 5: Solve for x
    x = 44,269,159.14/7,477.81
  6. Step 6: Final answer
    x = 5,920.07

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.