Home / 7,869.91-10,856.67-4,889.20

Finding the Fourth Proportional to 7,869.91, 10,856.67 and 4,889.20

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Solution

The fourth proportional to 7,869.91, 10,856.67 and 4,889.20 is: 6,744.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.91 : 10,856.67 = 4,889.20 : x
  2. Step 2: Convert to fraction form
    7,869.91/10,856.67 = 4,889.20/x
  3. Step 3: Cross multiply
    7,869.91x = 10,856.67 × 4,889.20
  4. Step 4: Simplify right side
    7,869.91x = 53,080,430.96
  5. Step 5: Solve for x
    x = 53,080,430.96/7,869.91
  6. Step 6: Final answer
    x = 6,744.73

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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.