Home / 5,426.90-8,139.55-1,531.70

Finding the Fourth Proportional to 5,426.90, 8,139.55 and 1,531.70

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Solution

The fourth proportional to 5,426.90, 8,139.55 and 1,531.70 is: 2,297.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.90 : 8,139.55 = 1,531.70 : x
  2. Step 2: Convert to fraction form
    5,426.90/8,139.55 = 1,531.70/x
  3. Step 3: Cross multiply
    5,426.90x = 8,139.55 × 1,531.70
  4. Step 4: Simplify right side
    5,426.90x = 12,467,348.74
  5. Step 5: Solve for x
    x = 12,467,348.74/5,426.90
  6. Step 6: Final answer
    x = 2,297.32

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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.