Home / 1,130.18-1,559.61-632.78

Finding the Fourth Proportional to 1,130.18, 1,559.61 and 632.78

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Solution

The fourth proportional to 1,130.18, 1,559.61 and 632.78 is: 873.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.18 : 1,559.61 = 632.78 : x
  2. Step 2: Convert to fraction form
    1,130.18/1,559.61 = 632.78/x
  3. Step 3: Cross multiply
    1,130.18x = 1,559.61 × 632.78
  4. Step 4: Simplify right side
    1,130.18x = 986,890.02
  5. Step 5: Solve for x
    x = 986,890.02/1,130.18
  6. Step 6: Final answer
    x = 873.22

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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.