Home / 7,107.28-9,810.10-4,123.78

Finding the Fourth Proportional to 7,107.28, 9,810.10 and 4,123.78

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Solution

The fourth proportional to 7,107.28, 9,810.10 and 4,123.78 is: 5,692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.28 : 9,810.10 = 4,123.78 : x
  2. Step 2: Convert to fraction form
    7,107.28/9,810.10 = 4,123.78/x
  3. Step 3: Cross multiply
    7,107.28x = 9,810.10 × 4,123.78
  4. Step 4: Simplify right side
    7,107.28x = 40,454,694.18
  5. Step 5: Solve for x
    x = 40,454,694.18/7,107.28
  6. Step 6: Final answer
    x = 5,692.01

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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.