Home / 3,143.79-4,337.09-1,816.71

Finding the Fourth Proportional to 3,143.79, 4,337.09 and 1,816.71

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Solution

The fourth proportional to 3,143.79, 4,337.09 and 1,816.71 is: 2,506.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.79 : 4,337.09 = 1,816.71 : x
  2. Step 2: Convert to fraction form
    3,143.79/4,337.09 = 1,816.71/x
  3. Step 3: Cross multiply
    3,143.79x = 4,337.09 × 1,816.71
  4. Step 4: Simplify right side
    3,143.79x = 7,879,225.69
  5. Step 5: Solve for x
    x = 7,879,225.69/3,143.79
  6. Step 6: Final answer
    x = 2,506.28

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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.