Home / 1,465.20-2,021.40-875.52

Finding the Fourth Proportional to 1,465.20, 2,021.40 and 875.52

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Solution

The fourth proportional to 1,465.20, 2,021.40 and 875.52 is: 1,207.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.20 : 2,021.40 = 875.52 : x
  2. Step 2: Convert to fraction form
    1,465.20/2,021.40 = 875.52/x
  3. Step 3: Cross multiply
    1,465.20x = 2,021.40 × 875.52
  4. Step 4: Simplify right side
    1,465.20x = 1,769,776.13
  5. Step 5: Solve for x
    x = 1,769,776.13/1,465.20
  6. Step 6: Final answer
    x = 1,207.87

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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.