Home / 1,535.06-2,118.76-872.28

Finding the Fourth Proportional to 1,535.06, 2,118.76 and 872.28

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Solution

The fourth proportional to 1,535.06, 2,118.76 and 872.28 is: 1,203.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.06 : 2,118.76 = 872.28 : x
  2. Step 2: Convert to fraction form
    1,535.06/2,118.76 = 872.28/x
  3. Step 3: Cross multiply
    1,535.06x = 2,118.76 × 872.28
  4. Step 4: Simplify right side
    1,535.06x = 1,848,149.79
  5. Step 5: Solve for x
    x = 1,848,149.79/1,535.06
  6. Step 6: Final answer
    x = 1,203.96

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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.