Home / 3,718.09-5,130.91-2,146.15

Finding the Fourth Proportional to 3,718.09, 5,130.91 and 2,146.15

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Solution

The fourth proportional to 3,718.09, 5,130.91 and 2,146.15 is: 2,961.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.09 : 5,130.91 = 2,146.15 : x
  2. Step 2: Convert to fraction form
    3,718.09/5,130.91 = 2,146.15/x
  3. Step 3: Cross multiply
    3,718.09x = 5,130.91 × 2,146.15
  4. Step 4: Simplify right side
    3,718.09x = 11,011,702.50
  5. Step 5: Solve for x
    x = 11,011,702.50/3,718.09
  6. Step 6: Final answer
    x = 2,961.66

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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.