Home / 3,123.10-4,685.19-1,043.20

Finding the Fourth Proportional to 3,123.10, 4,685.19 and 1,043.20

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Solution

The fourth proportional to 3,123.10, 4,685.19 and 1,043.20 is: 1,564.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.10 : 4,685.19 = 1,043.20 : x
  2. Step 2: Convert to fraction form
    3,123.10/4,685.19 = 1,043.20/x
  3. Step 3: Cross multiply
    3,123.10x = 4,685.19 × 1,043.20
  4. Step 4: Simplify right side
    3,123.10x = 4,887,590.21
  5. Step 5: Solve for x
    x = 4,887,590.21/3,123.10
  6. Step 6: Final answer
    x = 1,564.98

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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.