Home / 2,983.60-4,118.85-1,865.16

Finding the Fourth Proportional to 2,983.60, 4,118.85 and 1,865.16

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Solution

The fourth proportional to 2,983.60, 4,118.85 and 1,865.16 is: 2,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,983.60 : 4,118.85 = 1,865.16 : x
  2. Step 2: Convert to fraction form
    2,983.60/4,118.85 = 1,865.16/x
  3. Step 3: Cross multiply
    2,983.60x = 4,118.85 × 1,865.16
  4. Step 4: Simplify right side
    2,983.60x = 7,682,314.27
  5. Step 5: Solve for x
    x = 7,682,314.27/2,983.60
  6. Step 6: Final answer
    x = 2,574.85

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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.