Home / 1,535.24-2,118.68-836.64

Finding the Fourth Proportional to 1,535.24, 2,118.68 and 836.64

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Solution

The fourth proportional to 1,535.24, 2,118.68 and 836.64 is: 1,154.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.24 : 2,118.68 = 836.64 : x
  2. Step 2: Convert to fraction form
    1,535.24/2,118.68 = 836.64/x
  3. Step 3: Cross multiply
    1,535.24x = 2,118.68 × 836.64
  4. Step 4: Simplify right side
    1,535.24x = 1,772,572.44
  5. Step 5: Solve for x
    x = 1,772,572.44/1,535.24
  6. Step 6: Final answer
    x = 1,154.59

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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.