Home / 3,253.60-4,490-1,977.12

Finding the Fourth Proportional to 3,253.60, 4,490 and 1,977.12

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Solution

The fourth proportional to 3,253.60, 4,490 and 1,977.12 is: 2,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,253.60 : 4,490 = 1,977.12 : x
  2. Step 2: Convert to fraction form
    3,253.60/4,490 = 1,977.12/x
  3. Step 3: Cross multiply
    3,253.60x = 4,490 × 1,977.12
  4. Step 4: Simplify right side
    3,253.60x = 8,877,268.80
  5. Step 5: Solve for x
    x = 8,877,268.80/3,253.60
  6. Step 6: Final answer
    x = 2,728.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.