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Finding the Fourth Proportional to 2,865.94, 4,298.70 and 891.52

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Solution

The fourth proportional to 2,865.94, 4,298.70 and 891.52 is: 1,337.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.94 : 4,298.70 = 891.52 : x
  2. Step 2: Convert to fraction form
    2,865.94/4,298.70 = 891.52/x
  3. Step 3: Cross multiply
    2,865.94x = 4,298.70 × 891.52
  4. Step 4: Simplify right side
    2,865.94x = 3,832,377.02
  5. Step 5: Solve for x
    x = 3,832,377.02/2,865.94
  6. Step 6: Final answer
    x = 1,337.21

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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.