Home / 1,507.12-2,260.24-890.68

Finding the Fourth Proportional to 1,507.12, 2,260.24 and 890.68

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Solution

The fourth proportional to 1,507.12, 2,260.24 and 890.68 is: 1,335.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.12 : 2,260.24 = 890.68 : x
  2. Step 2: Convert to fraction form
    1,507.12/2,260.24 = 890.68/x
  3. Step 3: Cross multiply
    1,507.12x = 2,260.24 × 890.68
  4. Step 4: Simplify right side
    1,507.12x = 2,013,150.56
  5. Step 5: Solve for x
    x = 2,013,150.56/1,507.12
  6. Step 6: Final answer
    x = 1,335.76

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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.