Home / 5,487.57-7,574.55-3,131.28

Finding the Fourth Proportional to 5,487.57, 7,574.55 and 3,131.28

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Solution

The fourth proportional to 5,487.57, 7,574.55 and 3,131.28 is: 4,322.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.57 : 7,574.55 = 3,131.28 : x
  2. Step 2: Convert to fraction form
    5,487.57/7,574.55 = 3,131.28/x
  3. Step 3: Cross multiply
    5,487.57x = 7,574.55 × 3,131.28
  4. Step 4: Simplify right side
    5,487.57x = 23,718,036.92
  5. Step 5: Solve for x
    x = 23,718,036.92/5,487.57
  6. Step 6: Final answer
    x = 4,322.14

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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.