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Finding the Fourth Proportional to 2,598, 3,897 and 866.76

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Solution

The fourth proportional to 2,598, 3,897 and 866.76 is: 1,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,598 : 3,897 = 866.76 : x
  2. Step 2: Convert to fraction form
    2,598/3,897 = 866.76/x
  3. Step 3: Cross multiply
    2,598x = 3,897 × 866.76
  4. Step 4: Simplify right side
    2,598x = 3,377,763.72
  5. Step 5: Solve for x
    x = 3,377,763.72/2,598
  6. Step 6: Final answer
    x = 1,300.14

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Double scale
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Similar ratio
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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.