Home / 7,868.84-10,856.58-4,721.72

Finding the Fourth Proportional to 7,868.84, 10,856.58 and 4,721.72

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Solution

The fourth proportional to 7,868.84, 10,856.58 and 4,721.72 is: 6,514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.84 : 10,856.58 = 4,721.72 : x
  2. Step 2: Convert to fraction form
    7,868.84/10,856.58 = 4,721.72/x
  3. Step 3: Cross multiply
    7,868.84x = 10,856.58 × 4,721.72
  4. Step 4: Simplify right side
    7,868.84x = 51,261,730.92
  5. Step 5: Solve for x
    x = 51,261,730.92/7,868.84
  6. Step 6: Final answer
    x = 6,514.52

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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.