Home / 4,920.20-7,385.10-2,457.80

Finding the Fourth Proportional to 4,920.20, 7,385.10 and 2,457.80

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Solution

The fourth proportional to 4,920.20, 7,385.10 and 2,457.80 is: 3,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.20 : 7,385.10 = 2,457.80 : x
  2. Step 2: Convert to fraction form
    4,920.20/7,385.10 = 2,457.80/x
  3. Step 3: Cross multiply
    4,920.20x = 7,385.10 × 2,457.80
  4. Step 4: Simplify right side
    4,920.20x = 18,151,098.78
  5. Step 5: Solve for x
    x = 18,151,098.78/4,920.20
  6. Step 6: Final answer
    x = 3,689.10

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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.