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Finding the Fourth Proportional to 1,775.87, 2,450.40 and 1,029.89

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Solution

The fourth proportional to 1,775.87, 2,450.40 and 1,029.89 is: 1,421.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.87 : 2,450.40 = 1,029.89 : x
  2. Step 2: Convert to fraction form
    1,775.87/2,450.40 = 1,029.89/x
  3. Step 3: Cross multiply
    1,775.87x = 2,450.40 × 1,029.89
  4. Step 4: Simplify right side
    1,775.87x = 2,523,630.20
  5. Step 5: Solve for x
    x = 2,523,630.20/1,775.87
  6. Step 6: Final answer
    x = 1,421.07

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1.5x scale

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.