Home / 1,535.06-2,118.33-871.84

Finding the Fourth Proportional to 1,535.06, 2,118.33 and 871.84

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Solution

The fourth proportional to 1,535.06, 2,118.33 and 871.84 is: 1,203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.06 : 2,118.33 = 871.84 : x
  2. Step 2: Convert to fraction form
    1,535.06/2,118.33 = 871.84/x
  3. Step 3: Cross multiply
    1,535.06x = 2,118.33 × 871.84
  4. Step 4: Simplify right side
    1,535.06x = 1,846,848.00
  5. Step 5: Solve for x
    x = 1,846,848.00/1,535.06
  6. Step 6: Final answer
    x = 1,203.11

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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.