Home / 1,509.49-2,260.58-767.15

Finding the Fourth Proportional to 1,509.49, 2,260.58 and 767.15

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Solution

The fourth proportional to 1,509.49, 2,260.58 and 767.15 is: 1,148.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.49 : 2,260.58 = 767.15 : x
  2. Step 2: Convert to fraction form
    1,509.49/2,260.58 = 767.15/x
  3. Step 3: Cross multiply
    1,509.49x = 2,260.58 × 767.15
  4. Step 4: Simplify right side
    1,509.49x = 1,734,197.29
  5. Step 5: Solve for x
    x = 1,734,197.29/1,509.49
  6. Step 6: Final answer
    x = 1,148.86

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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.