Home / 1,165.98-1,749.38-777.54

Finding the Fourth Proportional to 1,165.98, 1,749.38 and 777.54

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Solution

The fourth proportional to 1,165.98, 1,749.38 and 777.54 is: 1,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,165.98 : 1,749.38 = 777.54 : x
  2. Step 2: Convert to fraction form
    1,165.98/1,749.38 = 777.54/x
  3. Step 3: Cross multiply
    1,165.98x = 1,749.38 × 777.54
  4. Step 4: Simplify right side
    1,165.98x = 1,360,209.04
  5. Step 5: Solve for x
    x = 1,360,209.04/1,165.98
  6. Step 6: Final answer
    x = 1,166.58

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1.5x scale

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.