Home / 7,877.28-10,870.68-4,340.46

Finding the Fourth Proportional to 7,877.28, 10,870.68 and 4,340.46

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Solution

The fourth proportional to 7,877.28, 10,870.68 and 4,340.46 is: 5,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.28 : 10,870.68 = 4,340.46 : x
  2. Step 2: Convert to fraction form
    7,877.28/10,870.68 = 4,340.46/x
  3. Step 3: Cross multiply
    7,877.28x = 10,870.68 × 4,340.46
  4. Step 4: Simplify right side
    7,877.28x = 47,183,751.71
  5. Step 5: Solve for x
    x = 47,183,751.71/7,877.28
  6. Step 6: Final answer
    x = 5,989.85

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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.