Home / 7,124.85-10,688.36-3,426.39

Finding the Fourth Proportional to 7,124.85, 10,688.36 and 3,426.39

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Solution

The fourth proportional to 7,124.85, 10,688.36 and 3,426.39 is: 5,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.85 : 10,688.36 = 3,426.39 : x
  2. Step 2: Convert to fraction form
    7,124.85/10,688.36 = 3,426.39/x
  3. Step 3: Cross multiply
    7,124.85x = 10,688.36 × 3,426.39
  4. Step 4: Simplify right side
    7,124.85x = 36,622,472.69
  5. Step 5: Solve for x
    x = 36,622,472.69/7,124.85
  6. Step 6: Final answer
    x = 5,140.10

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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.