Home / 1,266.13-1,899.50-572.80

Finding the Fourth Proportional to 1,266.13, 1,899.50 and 572.80

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Solution

The fourth proportional to 1,266.13, 1,899.50 and 572.80 is: 859.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.13 : 1,899.50 = 572.80 : x
  2. Step 2: Convert to fraction form
    1,266.13/1,899.50 = 572.80/x
  3. Step 3: Cross multiply
    1,266.13x = 1,899.50 × 572.80
  4. Step 4: Simplify right side
    1,266.13x = 1,088,036.69
  5. Step 5: Solve for x
    x = 1,088,036.69/1,266.13
  6. Step 6: Final answer
    x = 859.34

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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.