Home / 1,130.20-1,695.30-1,029.40

Finding the Fourth Proportional to 1,130.20, 1,695.30 and 1,029.40

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Solution

The fourth proportional to 1,130.20, 1,695.30 and 1,029.40 is: 1,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.20 : 1,695.30 = 1,029.40 : x
  2. Step 2: Convert to fraction form
    1,130.20/1,695.30 = 1,029.40/x
  3. Step 3: Cross multiply
    1,130.20x = 1,695.30 × 1,029.40
  4. Step 4: Simplify right side
    1,130.20x = 1,745,141.82
  5. Step 5: Solve for x
    x = 1,745,141.82/1,130.20
  6. Step 6: Final answer
    x = 1,544.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.