Home / 7,124.59-10,689.70-2,740.87

Finding the Fourth Proportional to 7,124.59, 10,689.70 and 2,740.87

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Solution

The fourth proportional to 7,124.59, 10,689.70 and 2,740.87 is: 4,112.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.59 : 10,689.70 = 2,740.87 : x
  2. Step 2: Convert to fraction form
    7,124.59/10,689.70 = 2,740.87/x
  3. Step 3: Cross multiply
    7,124.59x = 10,689.70 × 2,740.87
  4. Step 4: Simplify right side
    7,124.59x = 29,299,078.04
  5. Step 5: Solve for x
    x = 29,299,078.04/7,124.59
  6. Step 6: Final answer
    x = 4,112.39

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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.