Home / 6,929.40-10,381.80-5,280.96

Finding the Fourth Proportional to 6,929.40, 10,381.80 and 5,280.96

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Solution

The fourth proportional to 6,929.40, 10,381.80 and 5,280.96 is: 7,912.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,929.40 : 10,381.80 = 5,280.96 : x
  2. Step 2: Convert to fraction form
    6,929.40/10,381.80 = 5,280.96/x
  3. Step 3: Cross multiply
    6,929.40x = 10,381.80 × 5,280.96
  4. Step 4: Simplify right side
    6,929.40x = 54,825,870.53
  5. Step 5: Solve for x
    x = 54,825,870.53/6,929.40
  6. Step 6: Final answer
    x = 7,912.07

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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.