Home / 1,130.08-1,688.88-1,042.52

Finding the Fourth Proportional to 1,130.08, 1,688.88 and 1,042.52

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Solution

The fourth proportional to 1,130.08, 1,688.88 and 1,042.52 is: 1,558.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.08 : 1,688.88 = 1,042.52 : x
  2. Step 2: Convert to fraction form
    1,130.08/1,688.88 = 1,042.52/x
  3. Step 3: Cross multiply
    1,130.08x = 1,688.88 × 1,042.52
  4. Step 4: Simplify right side
    1,130.08x = 1,760,691.18
  5. Step 5: Solve for x
    x = 1,760,691.18/1,130.08
  6. Step 6: Final answer
    x = 1,558.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.