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Finding the Fourth Proportional to 2,818.61, 4,230.47 and 1,503.49

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Solution

The fourth proportional to 2,818.61, 4,230.47 and 1,503.49 is: 2,256.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.61 : 4,230.47 = 1,503.49 : x
  2. Step 2: Convert to fraction form
    2,818.61/4,230.47 = 1,503.49/x
  3. Step 3: Cross multiply
    2,818.61x = 4,230.47 × 1,503.49
  4. Step 4: Simplify right side
    2,818.61x = 6,360,469.34
  5. Step 5: Solve for x
    x = 6,360,469.34/2,818.61
  6. Step 6: Final answer
    x = 2,256.60

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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.