Home / 3,240.21-4,860.27-931.71

Finding the Fourth Proportional to 3,240.21, 4,860.27 and 931.71

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Solution

The fourth proportional to 3,240.21, 4,860.27 and 931.71 is: 1,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.21 : 4,860.27 = 931.71 : x
  2. Step 2: Convert to fraction form
    3,240.21/4,860.27 = 931.71/x
  3. Step 3: Cross multiply
    3,240.21x = 4,860.27 × 931.71
  4. Step 4: Simplify right side
    3,240.21x = 4,528,362.16
  5. Step 5: Solve for x
    x = 4,528,362.16/3,240.21
  6. Step 6: Final answer
    x = 1,397.55

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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.