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Finding the Fourth Proportional to 3,718.72, 5,126.70 and 3,603.70

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Solution

The fourth proportional to 3,718.72, 5,126.70 and 3,603.70 is: 4,968.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.72 : 5,126.70 = 3,603.70 : x
  2. Step 2: Convert to fraction form
    3,718.72/5,126.70 = 3,603.70/x
  3. Step 3: Cross multiply
    3,718.72x = 5,126.70 × 3,603.70
  4. Step 4: Simplify right side
    3,718.72x = 18,475,088.79
  5. Step 5: Solve for x
    x = 18,475,088.79/3,718.72
  6. Step 6: Final answer
    x = 4,968.13

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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.