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Finding the Fourth Proportional to 9,012.16, 12,437 and 5,655.12

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Solution

The fourth proportional to 9,012.16, 12,437 and 5,655.12 is: 7,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,012.16 : 12,437 = 5,655.12 : x
  2. Step 2: Convert to fraction form
    9,012.16/12,437 = 5,655.12/x
  3. Step 3: Cross multiply
    9,012.16x = 12,437 × 5,655.12
  4. Step 4: Simplify right side
    9,012.16x = 70,332,727.44
  5. Step 5: Solve for x
    x = 70,332,727.44/9,012.16
  6. Step 6: Final answer
    x = 7,804.20

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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.