Home / 1,530.64-2,112.29-867.62

Finding the Fourth Proportional to 1,530.64, 2,112.29 and 867.62

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Solution

The fourth proportional to 1,530.64, 2,112.29 and 867.62 is: 1,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.64 : 2,112.29 = 867.62 : x
  2. Step 2: Convert to fraction form
    1,530.64/2,112.29 = 867.62/x
  3. Step 3: Cross multiply
    1,530.64x = 2,112.29 × 867.62
  4. Step 4: Simplify right side
    1,530.64x = 1,832,665.05
  5. Step 5: Solve for x
    x = 1,832,665.05/1,530.64
  6. Step 6: Final answer
    x = 1,197.32

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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.