Home / 7,139.79-10,707.05-2,458.52

Finding the Fourth Proportional to 7,139.79, 10,707.05 and 2,458.52

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Solution

The fourth proportional to 7,139.79, 10,707.05 and 2,458.52 is: 3,686.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.79 : 10,707.05 = 2,458.52 : x
  2. Step 2: Convert to fraction form
    7,139.79/10,707.05 = 2,458.52/x
  3. Step 3: Cross multiply
    7,139.79x = 10,707.05 × 2,458.52
  4. Step 4: Simplify right side
    7,139.79x = 26,323,430.74
  5. Step 5: Solve for x
    x = 26,323,430.74/7,139.79
  6. Step 6: Final answer
    x = 3,686.86

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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.