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Finding the Fourth Proportional to 3,143.77, 4,718.54 and 3,132.01

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Solution

The fourth proportional to 3,143.77, 4,718.54 and 3,132.01 is: 4,700.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.77 : 4,718.54 = 3,132.01 : x
  2. Step 2: Convert to fraction form
    3,143.77/4,718.54 = 3,132.01/x
  3. Step 3: Cross multiply
    3,143.77x = 4,718.54 × 3,132.01
  4. Step 4: Simplify right side
    3,143.77x = 14,778,514.47
  5. Step 5: Solve for x
    x = 14,778,514.47/3,143.77
  6. Step 6: Final answer
    x = 4,700.89

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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.