Home / 1,459.30-2,187.27-729.40

Finding the Fourth Proportional to 1,459.30, 2,187.27 and 729.40

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Solution

The fourth proportional to 1,459.30, 2,187.27 and 729.40 is: 1,093.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.30 : 2,187.27 = 729.40 : x
  2. Step 2: Convert to fraction form
    1,459.30/2,187.27 = 729.40/x
  3. Step 3: Cross multiply
    1,459.30x = 2,187.27 × 729.40
  4. Step 4: Simplify right side
    1,459.30x = 1,595,394.74
  5. Step 5: Solve for x
    x = 1,595,394.74/1,459.30
  6. Step 6: Final answer
    x = 1,093.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.