Home / 1,586.72-2,189.80-1,168.98

Finding the Fourth Proportional to 1,586.72, 2,189.80 and 1,168.98

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Solution

The fourth proportional to 1,586.72, 2,189.80 and 1,168.98 is: 1,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.72 : 2,189.80 = 1,168.98 : x
  2. Step 2: Convert to fraction form
    1,586.72/2,189.80 = 1,168.98/x
  3. Step 3: Cross multiply
    1,586.72x = 2,189.80 × 1,168.98
  4. Step 4: Simplify right side
    1,586.72x = 2,559,832.40
  5. Step 5: Solve for x
    x = 2,559,832.40/1,586.72
  6. Step 6: Final answer
    x = 1,613.29

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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.