Home / 9,001.28-12,416.56-5,413.76

Finding the Fourth Proportional to 9,001.28, 12,416.56 and 5,413.76

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Solution

The fourth proportional to 9,001.28, 12,416.56 and 5,413.76 is: 7,467.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,001.28 : 12,416.56 = 5,413.76 : x
  2. Step 2: Convert to fraction form
    9,001.28/12,416.56 = 5,413.76/x
  3. Step 3: Cross multiply
    9,001.28x = 12,416.56 × 5,413.76
  4. Step 4: Simplify right side
    9,001.28x = 67,220,275.87
  5. Step 5: Solve for x
    x = 67,220,275.87/9,001.28
  6. Step 6: Final answer
    x = 7,467.86

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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.