Home / 9,259.11-12,778.28-5,280.32

Finding the Fourth Proportional to 9,259.11, 12,778.28 and 5,280.32

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Solution

The fourth proportional to 9,259.11, 12,778.28 and 5,280.32 is: 7,287.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,259.11 : 12,778.28 = 5,280.32 : x
  2. Step 2: Convert to fraction form
    9,259.11/12,778.28 = 5,280.32/x
  3. Step 3: Cross multiply
    9,259.11x = 12,778.28 × 5,280.32
  4. Step 4: Simplify right side
    9,259.11x = 67,473,317.16
  5. Step 5: Solve for x
    x = 67,473,317.16/9,259.11
  6. Step 6: Final answer
    x = 7,287.24

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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.