Home / 7,128.38-10,689.51-2,448.86

Finding the Fourth Proportional to 7,128.38, 10,689.51 and 2,448.86

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Solution

The fourth proportional to 7,128.38, 10,689.51 and 2,448.86 is: 3,672.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.38 : 10,689.51 = 2,448.86 : x
  2. Step 2: Convert to fraction form
    7,128.38/10,689.51 = 2,448.86/x
  3. Step 3: Cross multiply
    7,128.38x = 10,689.51 × 2,448.86
  4. Step 4: Simplify right side
    7,128.38x = 26,177,113.46
  5. Step 5: Solve for x
    x = 26,177,113.46/7,128.38
  6. Step 6: Final answer
    x = 3,672.24

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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.