Home / 1,580.03-2,180.36-881.27

Finding the Fourth Proportional to 1,580.03, 2,180.36 and 881.27

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Solution

The fourth proportional to 1,580.03, 2,180.36 and 881.27 is: 1,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.03 : 2,180.36 = 881.27 : x
  2. Step 2: Convert to fraction form
    1,580.03/2,180.36 = 881.27/x
  3. Step 3: Cross multiply
    1,580.03x = 2,180.36 × 881.27
  4. Step 4: Simplify right side
    1,580.03x = 1,921,485.86
  5. Step 5: Solve for x
    x = 1,921,485.86/1,580.03
  6. Step 6: Final answer
    x = 1,216.11

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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.