Home / 3,117.20-4,675.80-925.95

Finding the Fourth Proportional to 3,117.20, 4,675.80 and 925.95

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Solution

The fourth proportional to 3,117.20, 4,675.80 and 925.95 is: 1,388.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.20 : 4,675.80 = 925.95 : x
  2. Step 2: Convert to fraction form
    3,117.20/4,675.80 = 925.95/x
  3. Step 3: Cross multiply
    3,117.20x = 4,675.80 × 925.95
  4. Step 4: Simplify right side
    3,117.20x = 4,329,557.01
  5. Step 5: Solve for x
    x = 4,329,557.01/3,117.20
  6. Step 6: Final answer
    x = 1,388.93

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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.