Home / 7,769.31-10,719.30-7,020.87

Finding the Fourth Proportional to 7,769.31, 10,719.30 and 7,020.87

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Solution

The fourth proportional to 7,769.31, 10,719.30 and 7,020.87 is: 9,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.31 : 10,719.30 = 7,020.87 : x
  2. Step 2: Convert to fraction form
    7,769.31/10,719.30 = 7,020.87/x
  3. Step 3: Cross multiply
    7,769.31x = 10,719.30 × 7,020.87
  4. Step 4: Simplify right side
    7,769.31x = 75,258,811.79
  5. Step 5: Solve for x
    x = 75,258,811.79/7,769.31
  6. Step 6: Final answer
    x = 9,686.68

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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.