Home / 1,139.07-1,707.21-1,002.36

Finding the Fourth Proportional to 1,139.07, 1,707.21 and 1,002.36

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Solution

The fourth proportional to 1,139.07, 1,707.21 and 1,002.36 is: 1,502.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139.07 : 1,707.21 = 1,002.36 : x
  2. Step 2: Convert to fraction form
    1,139.07/1,707.21 = 1,002.36/x
  3. Step 3: Cross multiply
    1,139.07x = 1,707.21 × 1,002.36
  4. Step 4: Simplify right side
    1,139.07x = 1,711,239.02
  5. Step 5: Solve for x
    x = 1,711,239.02/1,139.07
  6. Step 6: Final answer
    x = 1,502.31

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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.