Home / 7,921.68-11,870.51-5,937.72

Finding the Fourth Proportional to 7,921.68, 11,870.51 and 5,937.72

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Solution

The fourth proportional to 7,921.68, 11,870.51 and 5,937.72 is: 8,897.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.68 : 11,870.51 = 5,937.72 : x
  2. Step 2: Convert to fraction form
    7,921.68/11,870.51 = 5,937.72/x
  3. Step 3: Cross multiply
    7,921.68x = 11,870.51 × 5,937.72
  4. Step 4: Simplify right side
    7,921.68x = 70,483,734.95
  5. Step 5: Solve for x
    x = 70,483,734.95/7,921.68
  6. Step 6: Final answer
    x = 8,897.57

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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.