Home / 7,867.20-10,851.12-5,070

Finding the Fourth Proportional to 7,867.20, 10,851.12 and 5,070

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Solution

The fourth proportional to 7,867.20, 10,851.12 and 5,070 is: 6,992.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.20 : 10,851.12 = 5,070 : x
  2. Step 2: Convert to fraction form
    7,867.20/10,851.12 = 5,070/x
  3. Step 3: Cross multiply
    7,867.20x = 10,851.12 × 5,070
  4. Step 4: Simplify right side
    7,867.20x = 55,015,178.40
  5. Step 5: Solve for x
    x = 55,015,178.40/7,867.20
  6. Step 6: Final answer
    x = 6,992.98

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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.