Home / 9,211.15-12,711.38-5,019.40

Finding the Fourth Proportional to 9,211.15, 12,711.38 and 5,019.40

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Solution

The fourth proportional to 9,211.15, 12,711.38 and 5,019.40 is: 6,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,211.15 : 12,711.38 = 5,019.40 : x
  2. Step 2: Convert to fraction form
    9,211.15/12,711.38 = 5,019.40/x
  3. Step 3: Cross multiply
    9,211.15x = 12,711.38 × 5,019.40
  4. Step 4: Simplify right side
    9,211.15x = 63,803,500.77
  5. Step 5: Solve for x
    x = 63,803,500.77/9,211.15
  6. Step 6: Final answer
    x = 6,926.77

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1.5x scale

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.