Home / 7,415.61-11,123.28-1,868.83

Finding the Fourth Proportional to 7,415.61, 11,123.28 and 1,868.83

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Solution

The fourth proportional to 7,415.61, 11,123.28 and 1,868.83 is: 2,803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.61 : 11,123.28 = 1,868.83 : x
  2. Step 2: Convert to fraction form
    7,415.61/11,123.28 = 1,868.83/x
  3. Step 3: Cross multiply
    7,415.61x = 11,123.28 × 1,868.83
  4. Step 4: Simplify right side
    7,415.61x = 20,787,519.36
  5. Step 5: Solve for x
    x = 20,787,519.36/7,415.61
  6. Step 6: Final answer
    x = 2,803.21

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Double scale
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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.