Home / 2,870.25-4,304.45-1,115.13

Finding the Fourth Proportional to 2,870.25, 4,304.45 and 1,115.13

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Solution

The fourth proportional to 2,870.25, 4,304.45 and 1,115.13 is: 1,672.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.25 : 4,304.45 = 1,115.13 : x
  2. Step 2: Convert to fraction form
    2,870.25/4,304.45 = 1,115.13/x
  3. Step 3: Cross multiply
    2,870.25x = 4,304.45 × 1,115.13
  4. Step 4: Simplify right side
    2,870.25x = 4,799,999.81
  5. Step 5: Solve for x
    x = 4,799,999.81/2,870.25
  6. Step 6: Final answer
    x = 1,672.33

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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.