Home / 5,434.30-8,140.65-3,123.10

Finding the Fourth Proportional to 5,434.30, 8,140.65 and 3,123.10

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Solution

The fourth proportional to 5,434.30, 8,140.65 and 3,123.10 is: 4,678.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,434.30 : 8,140.65 = 3,123.10 : x
  2. Step 2: Convert to fraction form
    5,434.30/8,140.65 = 3,123.10/x
  3. Step 3: Cross multiply
    5,434.30x = 8,140.65 × 3,123.10
  4. Step 4: Simplify right side
    5,434.30x = 25,424,064.02
  5. Step 5: Solve for x
    x = 25,424,064.02/5,434.30
  6. Step 6: Final answer
    x = 4,678.44

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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.