Home / 4,128.39-6,191.78-1,531.53

Finding the Fourth Proportional to 4,128.39, 6,191.78 and 1,531.53

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Solution

The fourth proportional to 4,128.39, 6,191.78 and 1,531.53 is: 2,296.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.39 : 6,191.78 = 1,531.53 : x
  2. Step 2: Convert to fraction form
    4,128.39/6,191.78 = 1,531.53/x
  3. Step 3: Cross multiply
    4,128.39x = 6,191.78 × 1,531.53
  4. Step 4: Simplify right side
    4,128.39x = 9,482,889.17
  5. Step 5: Solve for x
    x = 9,482,889.17/4,128.39
  6. Step 6: Final answer
    x = 2,296.99

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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.