Home / 1,776.48-2,664.72-911.40

Finding the Fourth Proportional to 1,776.48, 2,664.72 and 911.40

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Solution

The fourth proportional to 1,776.48, 2,664.72 and 911.40 is: 1,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.48 : 2,664.72 = 911.40 : x
  2. Step 2: Convert to fraction form
    1,776.48/2,664.72 = 911.40/x
  3. Step 3: Cross multiply
    1,776.48x = 2,664.72 × 911.40
  4. Step 4: Simplify right side
    1,776.48x = 2,428,625.81
  5. Step 5: Solve for x
    x = 2,428,625.81/1,776.48
  6. Step 6: Final answer
    x = 1,367.10

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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.