Home / 6,931.51-10,389.19-2,772.71

Finding the Fourth Proportional to 6,931.51, 10,389.19 and 2,772.71

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Solution

The fourth proportional to 6,931.51, 10,389.19 and 2,772.71 is: 4,155.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.51 : 10,389.19 = 2,772.71 : x
  2. Step 2: Convert to fraction form
    6,931.51/10,389.19 = 2,772.71/x
  3. Step 3: Cross multiply
    6,931.51x = 10,389.19 × 2,772.71
  4. Step 4: Simplify right side
    6,931.51x = 28,806,168.04
  5. Step 5: Solve for x
    x = 28,806,168.04/6,931.51
  6. Step 6: Final answer
    x = 4,155.83

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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.