Home / 2,312.34-3,191.10-1,317.77

Finding the Fourth Proportional to 2,312.34, 3,191.10 and 1,317.77

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Solution

The fourth proportional to 2,312.34, 3,191.10 and 1,317.77 is: 1,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.34 : 3,191.10 = 1,317.77 : x
  2. Step 2: Convert to fraction form
    2,312.34/3,191.10 = 1,317.77/x
  3. Step 3: Cross multiply
    2,312.34x = 3,191.10 × 1,317.77
  4. Step 4: Simplify right side
    2,312.34x = 4,205,135.85
  5. Step 5: Solve for x
    x = 4,205,135.85/2,312.34
  6. Step 6: Final answer
    x = 1,818.56

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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.