Home / 3,518.61-5,277.78-921.48

Finding the Fourth Proportional to 3,518.61, 5,277.78 and 921.48

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Solution

The fourth proportional to 3,518.61, 5,277.78 and 921.48 is: 1,382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.61 : 5,277.78 = 921.48 : x
  2. Step 2: Convert to fraction form
    3,518.61/5,277.78 = 921.48/x
  3. Step 3: Cross multiply
    3,518.61x = 5,277.78 × 921.48
  4. Step 4: Simplify right side
    3,518.61x = 4,863,368.71
  5. Step 5: Solve for x
    x = 4,863,368.71/3,518.61
  6. Step 6: Final answer
    x = 1,382.18

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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.