Home / 1,580.96-2,180.41-1,187.30

Finding the Fourth Proportional to 1,580.96, 2,180.41 and 1,187.30

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Solution

The fourth proportional to 1,580.96, 2,180.41 and 1,187.30 is: 1,637.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.96 : 2,180.41 = 1,187.30 : x
  2. Step 2: Convert to fraction form
    1,580.96/2,180.41 = 1,187.30/x
  3. Step 3: Cross multiply
    1,580.96x = 2,180.41 × 1,187.30
  4. Step 4: Simplify right side
    1,580.96x = 2,588,800.79
  5. Step 5: Solve for x
    x = 2,588,800.79/1,580.96
  6. Step 6: Final answer
    x = 1,637.49

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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.