Home / 3,122.52-4,681.08-1,390.56

Finding the Fourth Proportional to 3,122.52, 4,681.08 and 1,390.56

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Solution

The fourth proportional to 3,122.52, 4,681.08 and 1,390.56 is: 2,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.52 : 4,681.08 = 1,390.56 : x
  2. Step 2: Convert to fraction form
    3,122.52/4,681.08 = 1,390.56/x
  3. Step 3: Cross multiply
    3,122.52x = 4,681.08 × 1,390.56
  4. Step 4: Simplify right side
    3,122.52x = 6,509,322.60
  5. Step 5: Solve for x
    x = 6,509,322.60/3,122.52
  6. Step 6: Final answer
    x = 2,084.64

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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.