Home / 5,111.68-7,054.65-3,123.40

Finding the Fourth Proportional to 5,111.68, 7,054.65 and 3,123.40

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Solution

The fourth proportional to 5,111.68, 7,054.65 and 3,123.40 is: 4,310.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.68 : 7,054.65 = 3,123.40 : x
  2. Step 2: Convert to fraction form
    5,111.68/7,054.65 = 3,123.40/x
  3. Step 3: Cross multiply
    5,111.68x = 7,054.65 × 3,123.40
  4. Step 4: Simplify right side
    5,111.68x = 22,034,493.81
  5. Step 5: Solve for x
    x = 22,034,493.81/5,111.68
  6. Step 6: Final answer
    x = 4,310.62

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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.