Home / 1,535.14-2,118.59-871.74

Finding the Fourth Proportional to 1,535.14, 2,118.59 and 871.74

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Solution

The fourth proportional to 1,535.14, 2,118.59 and 871.74 is: 1,203.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.14 : 2,118.59 = 871.74 : x
  2. Step 2: Convert to fraction form
    1,535.14/2,118.59 = 871.74/x
  3. Step 3: Cross multiply
    1,535.14x = 2,118.59 × 871.74
  4. Step 4: Simplify right side
    1,535.14x = 1,846,859.65
  5. Step 5: Solve for x
    x = 1,846,859.65/1,535.14
  6. Step 6: Final answer
    x = 1,203.06

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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.