Home / 1,535.37-2,118.81-836.75

Finding the Fourth Proportional to 1,535.37, 2,118.81 and 836.75

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Solution

The fourth proportional to 1,535.37, 2,118.81 and 836.75 is: 1,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.37 : 2,118.81 = 836.75 : x
  2. Step 2: Convert to fraction form
    1,535.37/2,118.81 = 836.75/x
  3. Step 3: Cross multiply
    1,535.37x = 2,118.81 × 836.75
  4. Step 4: Simplify right side
    1,535.37x = 1,772,903.67
  5. Step 5: Solve for x
    x = 1,772,903.67/1,535.37
  6. Step 6: Final answer
    x = 1,154.71

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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.