Home / 7,920.12-11,880.14-2,373.47

Finding the Fourth Proportional to 7,920.12, 11,880.14 and 2,373.47

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Solution

The fourth proportional to 7,920.12, 11,880.14 and 2,373.47 is: 3,560.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.12 : 11,880.14 = 2,373.47 : x
  2. Step 2: Convert to fraction form
    7,920.12/11,880.14 = 2,373.47/x
  3. Step 3: Cross multiply
    7,920.12x = 11,880.14 × 2,373.47
  4. Step 4: Simplify right side
    7,920.12x = 28,197,084.62
  5. Step 5: Solve for x
    x = 28,197,084.62/7,920.12
  6. Step 6: Final answer
    x = 3,560.18

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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.