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Finding the Fourth Proportional to 2,607.40, 3,911.10 and 1,775.80

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Solution

The fourth proportional to 2,607.40, 3,911.10 and 1,775.80 is: 2,663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,607.40 : 3,911.10 = 1,775.80 : x
  2. Step 2: Convert to fraction form
    2,607.40/3,911.10 = 1,775.80/x
  3. Step 3: Cross multiply
    2,607.40x = 3,911.10 × 1,775.80
  4. Step 4: Simplify right side
    2,607.40x = 6,945,331.38
  5. Step 5: Solve for x
    x = 6,945,331.38/2,607.40
  6. Step 6: Final answer
    x = 2,663.70

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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.