Home / 3,118.32-4,677.40-927.08

Finding the Fourth Proportional to 3,118.32, 4,677.40 and 927.08

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Solution

The fourth proportional to 3,118.32, 4,677.40 and 927.08 is: 1,390.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.32 : 4,677.40 = 927.08 : x
  2. Step 2: Convert to fraction form
    3,118.32/4,677.40 = 927.08/x
  3. Step 3: Cross multiply
    3,118.32x = 4,677.40 × 927.08
  4. Step 4: Simplify right side
    3,118.32x = 4,336,323.99
  5. Step 5: Solve for x
    x = 4,336,323.99/3,118.32
  6. Step 6: Final answer
    x = 1,390.60

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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.