Home / 5,278.51-7,284.50-2,920.87

Finding the Fourth Proportional to 5,278.51, 7,284.50 and 2,920.87

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Solution

The fourth proportional to 5,278.51, 7,284.50 and 2,920.87 is: 4,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.51 : 7,284.50 = 2,920.87 : x
  2. Step 2: Convert to fraction form
    5,278.51/7,284.50 = 2,920.87/x
  3. Step 3: Cross multiply
    5,278.51x = 7,284.50 × 2,920.87
  4. Step 4: Simplify right side
    5,278.51x = 21,277,062.91
  5. Step 5: Solve for x
    x = 21,277,062.91/5,278.51
  6. Step 6: Final answer
    x = 4,030.88

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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.