Home / 1,266.08-1,746.90-768.68

Finding the Fourth Proportional to 1,266.08, 1,746.90 and 768.68

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Solution

The fourth proportional to 1,266.08, 1,746.90 and 768.68 is: 1,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.08 : 1,746.90 = 768.68 : x
  2. Step 2: Convert to fraction form
    1,266.08/1,746.90 = 768.68/x
  3. Step 3: Cross multiply
    1,266.08x = 1,746.90 × 768.68
  4. Step 4: Simplify right side
    1,266.08x = 1,342,807.09
  5. Step 5: Solve for x
    x = 1,342,807.09/1,266.08
  6. Step 6: Final answer
    x = 1,060.60

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1.5x scale

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.