Home / 5,665.28-8,490.24-4,989.44

Finding the Fourth Proportional to 5,665.28, 8,490.24 and 4,989.44

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Solution

The fourth proportional to 5,665.28, 8,490.24 and 4,989.44 is: 7,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.28 : 8,490.24 = 4,989.44 : x
  2. Step 2: Convert to fraction form
    5,665.28/8,490.24 = 4,989.44/x
  3. Step 3: Cross multiply
    5,665.28x = 8,490.24 × 4,989.44
  4. Step 4: Simplify right side
    5,665.28x = 42,361,543.07
  5. Step 5: Solve for x
    x = 42,361,543.07/5,665.28
  6. Step 6: Final answer
    x = 7,477.40

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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.