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Finding the Fourth Proportional to 1,656.80, 2,486.55 and 1,602.80

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Solution

The fourth proportional to 1,656.80, 2,486.55 and 1,602.80 is: 2,405.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,656.80 : 2,486.55 = 1,602.80 : x
  2. Step 2: Convert to fraction form
    1,656.80/2,486.55 = 1,602.80/x
  3. Step 3: Cross multiply
    1,656.80x = 2,486.55 × 1,602.80
  4. Step 4: Simplify right side
    1,656.80x = 3,985,442.34
  5. Step 5: Solve for x
    x = 3,985,442.34/1,656.80
  6. Step 6: Final answer
    x = 2,405.51

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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.