Home / 7,638.71-11,458.62-4,870.80

Finding the Fourth Proportional to 7,638.71, 11,458.62 and 4,870.80

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Solution

The fourth proportional to 7,638.71, 11,458.62 and 4,870.80 is: 7,306.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.71 : 11,458.62 = 4,870.80 : x
  2. Step 2: Convert to fraction form
    7,638.71/11,458.62 = 4,870.80/x
  3. Step 3: Cross multiply
    7,638.71x = 11,458.62 × 4,870.80
  4. Step 4: Simplify right side
    7,638.71x = 55,812,646.30
  5. Step 5: Solve for x
    x = 55,812,646.30/7,638.71
  6. Step 6: Final answer
    x = 7,306.56

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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.