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Finding the Fourth Proportional to 1,779.47, 2,447.47 and 1,558.04

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Solution

The fourth proportional to 1,779.47, 2,447.47 and 1,558.04 is: 2,142.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.47 : 2,447.47 = 1,558.04 : x
  2. Step 2: Convert to fraction form
    1,779.47/2,447.47 = 1,558.04/x
  3. Step 3: Cross multiply
    1,779.47x = 2,447.47 × 1,558.04
  4. Step 4: Simplify right side
    1,779.47x = 3,813,237.11
  5. Step 5: Solve for x
    x = 3,813,237.11/1,779.47
  6. Step 6: Final answer
    x = 2,142.91

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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.