Home / 1,269.90-1,749.60-1,130.04

Finding the Fourth Proportional to 1,269.90, 1,749.60 and 1,130.04

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Solution

The fourth proportional to 1,269.90, 1,749.60 and 1,130.04 is: 1,556.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.90 : 1,749.60 = 1,130.04 : x
  2. Step 2: Convert to fraction form
    1,269.90/1,749.60 = 1,130.04/x
  3. Step 3: Cross multiply
    1,269.90x = 1,749.60 × 1,130.04
  4. Step 4: Simplify right side
    1,269.90x = 1,977,117.98
  5. Step 5: Solve for x
    x = 1,977,117.98/1,269.90
  6. Step 6: Final answer
    x = 1,556.91

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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.