Home / 7,477.99-10,319.75-4,120.76

Finding the Fourth Proportional to 7,477.99, 10,319.75 and 4,120.76

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Solution

The fourth proportional to 7,477.99, 10,319.75 and 4,120.76 is: 5,686.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.99 : 10,319.75 = 4,120.76 : x
  2. Step 2: Convert to fraction form
    7,477.99/10,319.75 = 4,120.76/x
  3. Step 3: Cross multiply
    7,477.99x = 10,319.75 × 4,120.76
  4. Step 4: Simplify right side
    7,477.99x = 42,525,213.01
  5. Step 5: Solve for x
    x = 42,525,213.01/7,477.99
  6. Step 6: Final answer
    x = 5,686.72

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Half scale
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Double scale
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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.