Home / 1,540.15-2,125.29-841.53

Finding the Fourth Proportional to 1,540.15, 2,125.29 and 841.53

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Solution

The fourth proportional to 1,540.15, 2,125.29 and 841.53 is: 1,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.15 : 2,125.29 = 841.53 : x
  2. Step 2: Convert to fraction form
    1,540.15/2,125.29 = 841.53/x
  3. Step 3: Cross multiply
    1,540.15x = 2,125.29 × 841.53
  4. Step 4: Simplify right side
    1,540.15x = 1,788,495.29
  5. Step 5: Solve for x
    x = 1,788,495.29/1,540.15
  6. Step 6: Final answer
    x = 1,161.25

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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.