Home / 1,127.23-1,690.24-541.70

Finding the Fourth Proportional to 1,127.23, 1,690.24 and 541.70

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Solution

The fourth proportional to 1,127.23, 1,690.24 and 541.70 is: 812.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.23 : 1,690.24 = 541.70 : x
  2. Step 2: Convert to fraction form
    1,127.23/1,690.24 = 541.70/x
  3. Step 3: Cross multiply
    1,127.23x = 1,690.24 × 541.70
  4. Step 4: Simplify right side
    1,127.23x = 915,603.01
  5. Step 5: Solve for x
    x = 915,603.01/1,127.23
  6. Step 6: Final answer
    x = 812.26

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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.