Home / 1,835.12-2,750.56-911.28

Finding the Fourth Proportional to 1,835.12, 2,750.56 and 911.28

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Solution

The fourth proportional to 1,835.12, 2,750.56 and 911.28 is: 1,365.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,835.12 : 2,750.56 = 911.28 : x
  2. Step 2: Convert to fraction form
    1,835.12/2,750.56 = 911.28/x
  3. Step 3: Cross multiply
    1,835.12x = 2,750.56 × 911.28
  4. Step 4: Simplify right side
    1,835.12x = 2,506,530.32
  5. Step 5: Solve for x
    x = 2,506,530.32/1,835.12
  6. Step 6: Final answer
    x = 1,365.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.