Home / 2,914.64-4,020.82-1,970.76

Finding the Fourth Proportional to 2,914.64, 4,020.82 and 1,970.76

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Solution

The fourth proportional to 2,914.64, 4,020.82 and 1,970.76 is: 2,718.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.64 : 4,020.82 = 1,970.76 : x
  2. Step 2: Convert to fraction form
    2,914.64/4,020.82 = 1,970.76/x
  3. Step 3: Cross multiply
    2,914.64x = 4,020.82 × 1,970.76
  4. Step 4: Simplify right side
    2,914.64x = 7,924,071.22
  5. Step 5: Solve for x
    x = 7,924,071.22/2,914.64
  6. Step 6: Final answer
    x = 2,718.71

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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.