Home / 3,718.18-5,578.85-1,868.32

Finding the Fourth Proportional to 3,718.18, 5,578.85 and 1,868.32

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Solution

The fourth proportional to 3,718.18, 5,578.85 and 1,868.32 is: 2,803.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,718.18 : 5,578.85 = 1,868.32 : x
  2. Step 2: Convert to fraction form
    3,718.18/5,578.85 = 1,868.32/x
  3. Step 3: Cross multiply
    3,718.18x = 5,578.85 × 1,868.32
  4. Step 4: Simplify right side
    3,718.18x = 10,423,077.03
  5. Step 5: Solve for x
    x = 10,423,077.03/3,718.18
  6. Step 6: Final answer
    x = 2,803.27

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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.