Home / 2,840.58-4,261.19-991.35

Finding the Fourth Proportional to 2,840.58, 4,261.19 and 991.35

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Solution

The fourth proportional to 2,840.58, 4,261.19 and 991.35 is: 1,487.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.58 : 4,261.19 = 991.35 : x
  2. Step 2: Convert to fraction form
    2,840.58/4,261.19 = 991.35/x
  3. Step 3: Cross multiply
    2,840.58x = 4,261.19 × 991.35
  4. Step 4: Simplify right side
    2,840.58x = 4,224,325.75
  5. Step 5: Solve for x
    x = 4,224,325.75/2,840.58
  6. Step 6: Final answer
    x = 1,487.13

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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.