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Finding the Fourth Proportional to 3,117.06, 4,675.05 and 925.20

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Solution

The fourth proportional to 3,117.06, 4,675.05 and 925.20 is: 1,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.06 : 4,675.05 = 925.20 : x
  2. Step 2: Convert to fraction form
    3,117.06/4,675.05 = 925.20/x
  3. Step 3: Cross multiply
    3,117.06x = 4,675.05 × 925.20
  4. Step 4: Simplify right side
    3,117.06x = 4,325,356.26
  5. Step 5: Solve for x
    x = 4,325,356.26/3,117.06
  6. Step 6: Final answer
    x = 1,387.64

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1.5x scale

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.