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Finding the Fourth Proportional to 2,875.76, 4,291.18 and 2,763.44

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Solution

The fourth proportional to 2,875.76, 4,291.18 and 2,763.44 is: 4,123.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.76 : 4,291.18 = 2,763.44 : x
  2. Step 2: Convert to fraction form
    2,875.76/4,291.18 = 2,763.44/x
  3. Step 3: Cross multiply
    2,875.76x = 4,291.18 × 2,763.44
  4. Step 4: Simplify right side
    2,875.76x = 11,858,418.46
  5. Step 5: Solve for x
    x = 11,858,418.46/2,875.76
  6. Step 6: Final answer
    x = 4,123.58

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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.