Home / 1,113.30-1,542.84-1,097.64

Finding the Fourth Proportional to 1,113.30, 1,542.84 and 1,097.64

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Solution

The fourth proportional to 1,113.30, 1,542.84 and 1,097.64 is: 1,521.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.30 : 1,542.84 = 1,097.64 : x
  2. Step 2: Convert to fraction form
    1,113.30/1,542.84 = 1,097.64/x
  3. Step 3: Cross multiply
    1,113.30x = 1,542.84 × 1,097.64
  4. Step 4: Simplify right side
    1,113.30x = 1,693,482.90
  5. Step 5: Solve for x
    x = 1,693,482.90/1,113.30
  6. Step 6: Final answer
    x = 1,521.14

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.