Home / 5,614.80-8,422.20-1,916.88

Finding the Fourth Proportional to 5,614.80, 8,422.20 and 1,916.88

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Solution

The fourth proportional to 5,614.80, 8,422.20 and 1,916.88 is: 2,875.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,614.80 : 8,422.20 = 1,916.88 : x
  2. Step 2: Convert to fraction form
    5,614.80/8,422.20 = 1,916.88/x
  3. Step 3: Cross multiply
    5,614.80x = 8,422.20 × 1,916.88
  4. Step 4: Simplify right side
    5,614.80x = 16,144,346.74
  5. Step 5: Solve for x
    x = 16,144,346.74/5,614.80
  6. Step 6: Final answer
    x = 2,875.32

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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.