Home / 6,877.12-10,314.88-1,947.20

Finding the Fourth Proportional to 6,877.12, 10,314.88 and 1,947.20

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Solution

The fourth proportional to 6,877.12, 10,314.88 and 1,947.20 is: 2,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,877.12 : 10,314.88 = 1,947.20 : x
  2. Step 2: Convert to fraction form
    6,877.12/10,314.88 = 1,947.20/x
  3. Step 3: Cross multiply
    6,877.12x = 10,314.88 × 1,947.20
  4. Step 4: Simplify right side
    6,877.12x = 20,085,134.34
  5. Step 5: Solve for x
    x = 20,085,134.34/6,877.12
  6. Step 6: Final answer
    x = 2,920.57

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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.