Home / 5,426.90-8,140.20-1,729.35

Finding the Fourth Proportional to 5,426.90, 8,140.20 and 1,729.35

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Solution

The fourth proportional to 5,426.90, 8,140.20 and 1,729.35 is: 2,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.90 : 8,140.20 = 1,729.35 : x
  2. Step 2: Convert to fraction form
    5,426.90/8,140.20 = 1,729.35/x
  3. Step 3: Cross multiply
    5,426.90x = 8,140.20 × 1,729.35
  4. Step 4: Simplify right side
    5,426.90x = 14,077,248.38
  5. Step 5: Solve for x
    x = 14,077,248.38/5,426.90
  6. Step 6: Final answer
    x = 2,593.98

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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.