Home / 4,870.78-6,721.29-2,981.58

Finding the Fourth Proportional to 4,870.78, 6,721.29 and 2,981.58

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Solution

The fourth proportional to 4,870.78, 6,721.29 and 2,981.58 is: 4,114.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870.78 : 6,721.29 = 2,981.58 : x
  2. Step 2: Convert to fraction form
    4,870.78/6,721.29 = 2,981.58/x
  3. Step 3: Cross multiply
    4,870.78x = 6,721.29 × 2,981.58
  4. Step 4: Simplify right side
    4,870.78x = 20,040,063.84
  5. Step 5: Solve for x
    x = 20,040,063.84/4,870.78
  6. Step 6: Final answer
    x = 4,114.34

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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.