Home / 1,586.60-2,188.17-1,189.19

Finding the Fourth Proportional to 1,586.60, 2,188.17 and 1,189.19

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Solution

The fourth proportional to 1,586.60, 2,188.17 and 1,189.19 is: 1,640.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586.60 : 2,188.17 = 1,189.19 : x
  2. Step 2: Convert to fraction form
    1,586.60/2,188.17 = 1,189.19/x
  3. Step 3: Cross multiply
    1,586.60x = 2,188.17 × 1,189.19
  4. Step 4: Simplify right side
    1,586.60x = 2,602,138.94
  5. Step 5: Solve for x
    x = 2,602,138.94/1,586.60
  6. Step 6: Final answer
    x = 1,640.08

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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.