Home / 3,115.17-4,298.67-1,788.66

Finding the Fourth Proportional to 3,115.17, 4,298.67 and 1,788.66

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Solution

The fourth proportional to 3,115.17, 4,298.67 and 1,788.66 is: 2,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.17 : 4,298.67 = 1,788.66 : x
  2. Step 2: Convert to fraction form
    3,115.17/4,298.67 = 1,788.66/x
  3. Step 3: Cross multiply
    3,115.17x = 4,298.67 × 1,788.66
  4. Step 4: Simplify right side
    3,115.17x = 7,688,859.08
  5. Step 5: Solve for x
    x = 7,688,859.08/3,115.17
  6. Step 6: Final answer
    x = 2,468.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.