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Finding the Fourth Proportional to 1,868.32, 2,802.48 and 635.86

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Solution

The fourth proportional to 1,868.32, 2,802.48 and 635.86 is: 953.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.32 : 2,802.48 = 635.86 : x
  2. Step 2: Convert to fraction form
    1,868.32/2,802.48 = 635.86/x
  3. Step 3: Cross multiply
    1,868.32x = 2,802.48 × 635.86
  4. Step 4: Simplify right side
    1,868.32x = 1,781,984.93
  5. Step 5: Solve for x
    x = 1,781,984.93/1,868.32
  6. Step 6: Final answer
    x = 953.79

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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.