Home / 3,123.66-4,310.51-1,865.55

Finding the Fourth Proportional to 3,123.66, 4,310.51 and 1,865.55

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Solution

The fourth proportional to 3,123.66, 4,310.51 and 1,865.55 is: 2,574.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.66 : 4,310.51 = 1,865.55 : x
  2. Step 2: Convert to fraction form
    3,123.66/4,310.51 = 1,865.55/x
  3. Step 3: Cross multiply
    3,123.66x = 4,310.51 × 1,865.55
  4. Step 4: Simplify right side
    3,123.66x = 8,041,462.60
  5. Step 5: Solve for x
    x = 8,041,462.60/3,123.66
  6. Step 6: Final answer
    x = 2,574.37

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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.