Home / 7,139.61-10,707.26-2,458.80

Finding the Fourth Proportional to 7,139.61, 10,707.26 and 2,458.80

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Solution

The fourth proportional to 7,139.61, 10,707.26 and 2,458.80 is: 3,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.61 : 10,707.26 = 2,458.80 : x
  2. Step 2: Convert to fraction form
    7,139.61/10,707.26 = 2,458.80/x
  3. Step 3: Cross multiply
    7,139.61x = 10,707.26 × 2,458.80
  4. Step 4: Simplify right side
    7,139.61x = 26,326,998.59
  5. Step 5: Solve for x
    x = 26,326,998.59/7,139.61
  6. Step 6: Final answer
    x = 3,687.46

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1.5x scale

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.