Home / 5,286.71-7,931.28-1,777.19

Finding the Fourth Proportional to 5,286.71, 7,931.28 and 1,777.19

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Solution

The fourth proportional to 5,286.71, 7,931.28 and 1,777.19 is: 2,666.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.71 : 7,931.28 = 1,777.19 : x
  2. Step 2: Convert to fraction form
    5,286.71/7,931.28 = 1,777.19/x
  3. Step 3: Cross multiply
    5,286.71x = 7,931.28 × 1,777.19
  4. Step 4: Simplify right side
    5,286.71x = 14,095,351.85
  5. Step 5: Solve for x
    x = 14,095,351.85/5,286.71
  6. Step 6: Final answer
    x = 2,666.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.