Home / 1,776.12-2,449.20-1,178.76

Finding the Fourth Proportional to 1,776.12, 2,449.20 and 1,178.76

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Solution

The fourth proportional to 1,776.12, 2,449.20 and 1,178.76 is: 1,625.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.12 : 2,449.20 = 1,178.76 : x
  2. Step 2: Convert to fraction form
    1,776.12/2,449.20 = 1,178.76/x
  3. Step 3: Cross multiply
    1,776.12x = 2,449.20 × 1,178.76
  4. Step 4: Simplify right side
    1,776.12x = 2,887,018.99
  5. Step 5: Solve for x
    x = 2,887,018.99/1,776.12
  6. Step 6: Final answer
    x = 1,625.46

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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.