Home / 9,077.20-12,539.28-7,007.92

Finding the Fourth Proportional to 9,077.20, 12,539.28 and 7,007.92

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Solution

The fourth proportional to 9,077.20, 12,539.28 and 7,007.92 is: 9,680.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,077.20 : 12,539.28 = 7,007.92 : x
  2. Step 2: Convert to fraction form
    9,077.20/12,539.28 = 7,007.92/x
  3. Step 3: Cross multiply
    9,077.20x = 12,539.28 × 7,007.92
  4. Step 4: Simplify right side
    9,077.20x = 87,874,271.10
  5. Step 5: Solve for x
    x = 87,874,271.10/9,077.20
  6. Step 6: Final answer
    x = 9,680.77

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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.