Home / 3,718.49-5,135.45-2,528.78

Finding the Fourth Proportional to 3,718.49, 5,135.45 and 2,528.78

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Solution

The fourth proportional to 3,718.49, 5,135.45 and 2,528.78 is: 3,492.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.49 : 5,135.45 = 2,528.78 : x
  2. Step 2: Convert to fraction form
    3,718.49/5,135.45 = 2,528.78/x
  3. Step 3: Cross multiply
    3,718.49x = 5,135.45 × 2,528.78
  4. Step 4: Simplify right side
    3,718.49x = 12,986,384.93
  5. Step 5: Solve for x
    x = 12,986,384.93/3,718.49
  6. Step 6: Final answer
    x = 3,492.39

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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.