Home / 1,296.48-1,789.20-1,036.38

Finding the Fourth Proportional to 1,296.48, 1,789.20 and 1,036.38

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Solution

The fourth proportional to 1,296.48, 1,789.20 and 1,036.38 is: 1,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.48 : 1,789.20 = 1,036.38 : x
  2. Step 2: Convert to fraction form
    1,296.48/1,789.20 = 1,036.38/x
  3. Step 3: Cross multiply
    1,296.48x = 1,789.20 × 1,036.38
  4. Step 4: Simplify right side
    1,296.48x = 1,854,291.10
  5. Step 5: Solve for x
    x = 1,854,291.10/1,296.48
  6. Step 6: Final answer
    x = 1,430.25

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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.