Home / 1,677.31-2,312.15-1,179.16

Finding the Fourth Proportional to 1,677.31, 2,312.15 and 1,179.16

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Solution

The fourth proportional to 1,677.31, 2,312.15 and 1,179.16 is: 1,625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.31 : 2,312.15 = 1,179.16 : x
  2. Step 2: Convert to fraction form
    1,677.31/2,312.15 = 1,179.16/x
  3. Step 3: Cross multiply
    1,677.31x = 2,312.15 × 1,179.16
  4. Step 4: Simplify right side
    1,677.31x = 2,726,383.12
  5. Step 5: Solve for x
    x = 2,726,383.12/1,677.31
  6. Step 6: Final answer
    x = 1,625.45

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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.