Home / 8,490.30-12,735.45-5,989.02

Finding the Fourth Proportional to 8,490.30, 12,735.45 and 5,989.02

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Solution

The fourth proportional to 8,490.30, 12,735.45 and 5,989.02 is: 8,983.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.30 : 12,735.45 = 5,989.02 : x
  2. Step 2: Convert to fraction form
    8,490.30/12,735.45 = 5,989.02/x
  3. Step 3: Cross multiply
    8,490.30x = 12,735.45 × 5,989.02
  4. Step 4: Simplify right side
    8,490.30x = 76,272,864.76
  5. Step 5: Solve for x
    x = 76,272,864.76/8,490.30
  6. Step 6: Final answer
    x = 8,983.53

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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.