Home / 1,539.11-2,124.14-876.10

Finding the Fourth Proportional to 1,539.11, 2,124.14 and 876.10

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Solution

The fourth proportional to 1,539.11, 2,124.14 and 876.10 is: 1,209.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.11 : 2,124.14 = 876.10 : x
  2. Step 2: Convert to fraction form
    1,539.11/2,124.14 = 876.10/x
  3. Step 3: Cross multiply
    1,539.11x = 2,124.14 × 876.10
  4. Step 4: Simplify right side
    1,539.11x = 1,860,959.05
  5. Step 5: Solve for x
    x = 1,860,959.05/1,539.11
  6. Step 6: Final answer
    x = 1,209.11

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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.