Home / 1,120.12-1,679.56-534.92

Finding the Fourth Proportional to 1,120.12, 1,679.56 and 534.92

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Solution

The fourth proportional to 1,120.12, 1,679.56 and 534.92 is: 802.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.12 : 1,679.56 = 534.92 : x
  2. Step 2: Convert to fraction form
    1,120.12/1,679.56 = 534.92/x
  3. Step 3: Cross multiply
    1,120.12x = 1,679.56 × 534.92
  4. Step 4: Simplify right side
    1,120.12x = 898,430.24
  5. Step 5: Solve for x
    x = 898,430.24/1,120.12
  6. Step 6: Final answer
    x = 802.08

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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.