Home / 6,278.80-9,416.40-1,895.20

Finding the Fourth Proportional to 6,278.80, 9,416.40 and 1,895.20

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Solution

The fourth proportional to 6,278.80, 9,416.40 and 1,895.20 is: 2,842.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.80 : 9,416.40 = 1,895.20 : x
  2. Step 2: Convert to fraction form
    6,278.80/9,416.40 = 1,895.20/x
  3. Step 3: Cross multiply
    6,278.80x = 9,416.40 × 1,895.20
  4. Step 4: Simplify right side
    6,278.80x = 17,845,961.28
  5. Step 5: Solve for x
    x = 17,845,961.28/6,278.80
  6. Step 6: Final answer
    x = 2,842.26

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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.