Home / 2,312.54-3,191.15-1,317.77

Finding the Fourth Proportional to 2,312.54, 3,191.15 and 1,317.77

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Solution

The fourth proportional to 2,312.54, 3,191.15 and 1,317.77 is: 1,818.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.54 : 3,191.15 = 1,317.77 : x
  2. Step 2: Convert to fraction form
    2,312.54/3,191.15 = 1,317.77/x
  3. Step 3: Cross multiply
    2,312.54x = 3,191.15 × 1,317.77
  4. Step 4: Simplify right side
    2,312.54x = 4,205,179.19
  5. Step 5: Solve for x
    x = 4,205,179.19/2,312.54
  6. Step 6: Final answer
    x = 1,818.43

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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.