Home / 3,639.84-5,455.18-1,557.39

Finding the Fourth Proportional to 3,639.84, 5,455.18 and 1,557.39

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Solution

The fourth proportional to 3,639.84, 5,455.18 and 1,557.39 is: 2,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.84 : 5,455.18 = 1,557.39 : x
  2. Step 2: Convert to fraction form
    3,639.84/5,455.18 = 1,557.39/x
  3. Step 3: Cross multiply
    3,639.84x = 5,455.18 × 1,557.39
  4. Step 4: Simplify right side
    3,639.84x = 8,495,842.78
  5. Step 5: Solve for x
    x = 8,495,842.78/3,639.84
  6. Step 6: Final answer
    x = 2,334.13

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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.