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Finding the Fourth Proportional to 1,889.61, 2,607.61 and 1,050.31

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Solution

The fourth proportional to 1,889.61, 2,607.61 and 1,050.31 is: 1,449.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.61 : 2,607.61 = 1,050.31 : x
  2. Step 2: Convert to fraction form
    1,889.61/2,607.61 = 1,050.31/x
  3. Step 3: Cross multiply
    1,889.61x = 2,607.61 × 1,050.31
  4. Step 4: Simplify right side
    1,889.61x = 2,738,798.86
  5. Step 5: Solve for x
    x = 2,738,798.86/1,889.61
  6. Step 6: Final answer
    x = 1,449.40

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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.