Home / 2,587.19-3,856.05-2,091.47

Finding the Fourth Proportional to 2,587.19, 3,856.05 and 2,091.47

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Solution

The fourth proportional to 2,587.19, 3,856.05 and 2,091.47 is: 3,117.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.19 : 3,856.05 = 2,091.47 : x
  2. Step 2: Convert to fraction form
    2,587.19/3,856.05 = 2,091.47/x
  3. Step 3: Cross multiply
    2,587.19x = 3,856.05 × 2,091.47
  4. Step 4: Simplify right side
    2,587.19x = 8,064,793.61
  5. Step 5: Solve for x
    x = 8,064,793.61/2,587.19
  6. Step 6: Final answer
    x = 3,117.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.