Home / 1,531.44-2,109.92-1,151.64

Finding the Fourth Proportional to 1,531.44, 2,109.92 and 1,151.64

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Solution

The fourth proportional to 1,531.44, 2,109.92 and 1,151.64 is: 1,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.44 : 2,109.92 = 1,151.64 : x
  2. Step 2: Convert to fraction form
    1,531.44/2,109.92 = 1,151.64/x
  3. Step 3: Cross multiply
    1,531.44x = 2,109.92 × 1,151.64
  4. Step 4: Simplify right side
    1,531.44x = 2,429,868.27
  5. Step 5: Solve for x
    x = 2,429,868.27/1,531.44
  6. Step 6: Final answer
    x = 1,586.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.