Home / 2,641.18-3,644.80-1,646.40

Finding the Fourth Proportional to 2,641.18, 3,644.80 and 1,646.40

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Solution

The fourth proportional to 2,641.18, 3,644.80 and 1,646.40 is: 2,272.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.18 : 3,644.80 = 1,646.40 : x
  2. Step 2: Convert to fraction form
    2,641.18/3,644.80 = 1,646.40/x
  3. Step 3: Cross multiply
    2,641.18x = 3,644.80 × 1,646.40
  4. Step 4: Simplify right side
    2,641.18x = 6,000,798.72
  5. Step 5: Solve for x
    x = 6,000,798.72/2,641.18
  6. Step 6: Final answer
    x = 2,272.01

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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.