Home / 1,460.51-2,187.20-767.76

Finding the Fourth Proportional to 1,460.51, 2,187.20 and 767.76

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Solution

The fourth proportional to 1,460.51, 2,187.20 and 767.76 is: 1,149.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.51 : 2,187.20 = 767.76 : x
  2. Step 2: Convert to fraction form
    1,460.51/2,187.20 = 767.76/x
  3. Step 3: Cross multiply
    1,460.51x = 2,187.20 × 767.76
  4. Step 4: Simplify right side
    1,460.51x = 1,679,238.39
  5. Step 5: Solve for x
    x = 1,679,238.39/1,460.51
  6. Step 6: Final answer
    x = 1,149.76

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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.