Home / 7,480.85-10,323.64-4,123.78

Finding the Fourth Proportional to 7,480.85, 10,323.64 and 4,123.78

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Solution

The fourth proportional to 7,480.85, 10,323.64 and 4,123.78 is: 5,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.85 : 10,323.64 = 4,123.78 : x
  2. Step 2: Convert to fraction form
    7,480.85/10,323.64 = 4,123.78/x
  3. Step 3: Cross multiply
    7,480.85x = 10,323.64 × 4,123.78
  4. Step 4: Simplify right side
    7,480.85x = 42,572,420.16
  5. Step 5: Solve for x
    x = 42,572,420.16/7,480.85
  6. Step 6: Final answer
    x = 5,690.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.