Home / 1,509.08-2,262.30-778.28

Finding the Fourth Proportional to 1,509.08, 2,262.30 and 778.28

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Solution

The fourth proportional to 1,509.08, 2,262.30 and 778.28 is: 1,166.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.08 : 2,262.30 = 778.28 : x
  2. Step 2: Convert to fraction form
    1,509.08/2,262.30 = 778.28/x
  3. Step 3: Cross multiply
    1,509.08x = 2,262.30 × 778.28
  4. Step 4: Simplify right side
    1,509.08x = 1,760,702.84
  5. Step 5: Solve for x
    x = 1,760,702.84/1,509.08
  6. Step 6: Final answer
    x = 1,166.74

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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.