Home / 7,123.05-10,660.28-6,539.85

Finding the Fourth Proportional to 7,123.05, 10,660.28 and 6,539.85

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Solution

The fourth proportional to 7,123.05, 10,660.28 and 6,539.85 is: 9,787.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.05 : 10,660.28 = 6,539.85 : x
  2. Step 2: Convert to fraction form
    7,123.05/10,660.28 = 6,539.85/x
  3. Step 3: Cross multiply
    7,123.05x = 10,660.28 × 6,539.85
  4. Step 4: Simplify right side
    7,123.05x = 69,716,599.46
  5. Step 5: Solve for x
    x = 69,716,599.46/7,123.05
  6. Step 6: Final answer
    x = 9,787.46

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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.