Home / 7,940.10-11,928.51-4,987.74

Finding the Fourth Proportional to 7,940.10, 11,928.51 and 4,987.74

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Solution

The fourth proportional to 7,940.10, 11,928.51 and 4,987.74 is: 7,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.10 : 11,928.51 = 4,987.74 : x
  2. Step 2: Convert to fraction form
    7,940.10/11,928.51 = 4,987.74/x
  3. Step 3: Cross multiply
    7,940.10x = 11,928.51 × 4,987.74
  4. Step 4: Simplify right side
    7,940.10x = 59,496,306.47
  5. Step 5: Solve for x
    x = 59,496,306.47/7,940.10
  6. Step 6: Final answer
    x = 7,493.14

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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.