Home / 9,193.99-12,688.37-5,215.45

Finding the Fourth Proportional to 9,193.99, 12,688.37 and 5,215.45

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Solution

The fourth proportional to 9,193.99, 12,688.37 and 5,215.45 is: 7,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,193.99 : 12,688.37 = 5,215.45 : x
  2. Step 2: Convert to fraction form
    9,193.99/12,688.37 = 5,215.45/x
  3. Step 3: Cross multiply
    9,193.99x = 12,688.37 × 5,215.45
  4. Step 4: Simplify right side
    9,193.99x = 66,175,559.32
  5. Step 5: Solve for x
    x = 66,175,559.32/9,193.99
  6. Step 6: Final answer
    x = 7,197.70

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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.