Home / 1,531.49-2,113.09-1,089.23

Finding the Fourth Proportional to 1,531.49, 2,113.09 and 1,089.23

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Solution

The fourth proportional to 1,531.49, 2,113.09 and 1,089.23 is: 1,502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.49 : 2,113.09 = 1,089.23 : x
  2. Step 2: Convert to fraction form
    1,531.49/2,113.09 = 1,089.23/x
  3. Step 3: Cross multiply
    1,531.49x = 2,113.09 × 1,089.23
  4. Step 4: Simplify right side
    1,531.49x = 2,301,641.02
  5. Step 5: Solve for x
    x = 2,301,641.02/1,531.49
  6. Step 6: Final answer
    x = 1,502.88

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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.