Home / 1,535.28-2,118.63-836.64

Finding the Fourth Proportional to 1,535.28, 2,118.63 and 836.64

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Solution

The fourth proportional to 1,535.28, 2,118.63 and 836.64 is: 1,154.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.28 : 2,118.63 = 836.64 : x
  2. Step 2: Convert to fraction form
    1,535.28/2,118.63 = 836.64/x
  3. Step 3: Cross multiply
    1,535.28x = 2,118.63 × 836.64
  4. Step 4: Simplify right side
    1,535.28x = 1,772,530.60
  5. Step 5: Solve for x
    x = 1,772,530.60/1,535.28
  6. Step 6: Final answer
    x = 1,154.53

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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.