Home / 2,186.16-3,014.40-1,439.88

Finding the Fourth Proportional to 2,186.16, 3,014.40 and 1,439.88

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Solution

The fourth proportional to 2,186.16, 3,014.40 and 1,439.88 is: 1,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.16 : 3,014.40 = 1,439.88 : x
  2. Step 2: Convert to fraction form
    2,186.16/3,014.40 = 1,439.88/x
  3. Step 3: Cross multiply
    2,186.16x = 3,014.40 × 1,439.88
  4. Step 4: Simplify right side
    2,186.16x = 4,340,374.27
  5. Step 5: Solve for x
    x = 4,340,374.27/2,186.16
  6. Step 6: Final answer
    x = 1,985.39

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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.