Home / 1,276.02-1,908.99-1,266.66

Finding the Fourth Proportional to 1,276.02, 1,908.99 and 1,266.66

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Solution

The fourth proportional to 1,276.02, 1,908.99 and 1,266.66 is: 1,894.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.02 : 1,908.99 = 1,266.66 : x
  2. Step 2: Convert to fraction form
    1,276.02/1,908.99 = 1,266.66/x
  3. Step 3: Cross multiply
    1,276.02x = 1,908.99 × 1,266.66
  4. Step 4: Simplify right side
    1,276.02x = 2,418,041.27
  5. Step 5: Solve for x
    x = 2,418,041.27/1,276.02
  6. Step 6: Final answer
    x = 1,894.99

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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.