Home / 1,507.24-2,079.60-917.80

Finding the Fourth Proportional to 1,507.24, 2,079.60 and 917.80

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Solution

The fourth proportional to 1,507.24, 2,079.60 and 917.80 is: 1,266.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,507.24 : 2,079.60 = 917.80 : x
  2. Step 2: Convert to fraction form
    1,507.24/2,079.60 = 917.80/x
  3. Step 3: Cross multiply
    1,507.24x = 2,079.60 × 917.80
  4. Step 4: Simplify right side
    1,507.24x = 1,908,656.88
  5. Step 5: Solve for x
    x = 1,908,656.88/1,507.24
  6. Step 6: Final answer
    x = 1,266.33

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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.