Home / 7,877.15-10,870.71-4,520.57

Finding the Fourth Proportional to 7,877.15, 10,870.71 and 4,520.57

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Solution

The fourth proportional to 7,877.15, 10,870.71 and 4,520.57 is: 6,238.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.15 : 10,870.71 = 4,520.57 : x
  2. Step 2: Convert to fraction form
    7,877.15/10,870.71 = 4,520.57/x
  3. Step 3: Cross multiply
    7,877.15x = 10,870.71 × 4,520.57
  4. Step 4: Simplify right side
    7,877.15x = 49,141,832.68
  5. Step 5: Solve for x
    x = 49,141,832.68/7,877.15
  6. Step 6: Final answer
    x = 6,238.53

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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.