Home / 2,079.35-3,117.47-1,257.46

Finding the Fourth Proportional to 2,079.35, 3,117.47 and 1,257.46

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Solution

The fourth proportional to 2,079.35, 3,117.47 and 1,257.46 is: 1,885.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.35 : 3,117.47 = 1,257.46 : x
  2. Step 2: Convert to fraction form
    2,079.35/3,117.47 = 1,257.46/x
  3. Step 3: Cross multiply
    2,079.35x = 3,117.47 × 1,257.46
  4. Step 4: Simplify right side
    2,079.35x = 3,920,071.95
  5. Step 5: Solve for x
    x = 3,920,071.95/2,079.35
  6. Step 6: Final answer
    x = 1,885.24

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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.