Home / 8,990.16-13,488.32-5,487.20

Finding the Fourth Proportional to 8,990.16, 13,488.32 and 5,487.20

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Solution

The fourth proportional to 8,990.16, 13,488.32 and 5,487.20 is: 8,232.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.16 : 13,488.32 = 5,487.20 : x
  2. Step 2: Convert to fraction form
    8,990.16/13,488.32 = 5,487.20/x
  3. Step 3: Cross multiply
    8,990.16x = 13,488.32 × 5,487.20
  4. Step 4: Simplify right side
    8,990.16x = 74,013,109.50
  5. Step 5: Solve for x
    x = 74,013,109.50/8,990.16
  6. Step 6: Final answer
    x = 8,232.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.