Home / 7,880.28-10,870.67-4,691.36

Finding the Fourth Proportional to 7,880.28, 10,870.67 and 4,691.36

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Solution

The fourth proportional to 7,880.28, 10,870.67 and 4,691.36 is: 6,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.28 : 10,870.67 = 4,691.36 : x
  2. Step 2: Convert to fraction form
    7,880.28/10,870.67 = 4,691.36/x
  3. Step 3: Cross multiply
    7,880.28x = 10,870.67 × 4,691.36
  4. Step 4: Simplify right side
    7,880.28x = 50,998,226.41
  5. Step 5: Solve for x
    x = 50,998,226.41/7,880.28
  6. Step 6: Final answer
    x = 6,471.63

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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.