Home / 1,586.40-2,186.88-1,236.48

Finding the Fourth Proportional to 1,586.40, 2,186.88 and 1,236.48

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Solution

The fourth proportional to 1,586.40, 2,186.88 and 1,236.48 is: 1,704.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.40 : 2,186.88 = 1,236.48 : x
  2. Step 2: Convert to fraction form
    1,586.40/2,186.88 = 1,236.48/x
  3. Step 3: Cross multiply
    1,586.40x = 2,186.88 × 1,236.48
  4. Step 4: Simplify right side
    1,586.40x = 2,704,033.38
  5. Step 5: Solve for x
    x = 2,704,033.38/1,586.40
  6. Step 6: Final answer
    x = 1,704.51

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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.