Home / 2,911.95-4,018.61-1,585.78

Finding the Fourth Proportional to 2,911.95, 4,018.61 and 1,585.78

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Solution

The fourth proportional to 2,911.95, 4,018.61 and 1,585.78 is: 2,188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.95 : 4,018.61 = 1,585.78 : x
  2. Step 2: Convert to fraction form
    2,911.95/4,018.61 = 1,585.78/x
  3. Step 3: Cross multiply
    2,911.95x = 4,018.61 × 1,585.78
  4. Step 4: Simplify right side
    2,911.95x = 6,372,625.28
  5. Step 5: Solve for x
    x = 6,372,625.28/2,911.95
  6. Step 6: Final answer
    x = 2,188.44

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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.