Home / 5,278.77-7,284.60-2,920.93

Finding the Fourth Proportional to 5,278.77, 7,284.60 and 2,920.93

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Solution

The fourth proportional to 5,278.77, 7,284.60 and 2,920.93 is: 4,030.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.77 : 7,284.60 = 2,920.93 : x
  2. Step 2: Convert to fraction form
    5,278.77/7,284.60 = 2,920.93/x
  3. Step 3: Cross multiply
    5,278.77x = 7,284.60 × 2,920.93
  4. Step 4: Simplify right side
    5,278.77x = 21,277,788.47
  5. Step 5: Solve for x
    x = 21,277,788.47/5,278.77
  6. Step 6: Final answer
    x = 4,030.82

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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.