Home / 3,140.32-4,332.54-1,960.96

Finding the Fourth Proportional to 3,140.32, 4,332.54 and 1,960.96

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Solution

The fourth proportional to 3,140.32, 4,332.54 and 1,960.96 is: 2,705.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.32 : 4,332.54 = 1,960.96 : x
  2. Step 2: Convert to fraction form
    3,140.32/4,332.54 = 1,960.96/x
  3. Step 3: Cross multiply
    3,140.32x = 4,332.54 × 1,960.96
  4. Step 4: Simplify right side
    3,140.32x = 8,495,937.64
  5. Step 5: Solve for x
    x = 8,495,937.64/3,140.32
  6. Step 6: Final answer
    x = 2,705.44

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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.