Home / 1,621.61-2,237.05-1,558.74

Finding the Fourth Proportional to 1,621.61, 2,237.05 and 1,558.74

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Solution

The fourth proportional to 1,621.61, 2,237.05 and 1,558.74 is: 2,150.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.61 : 2,237.05 = 1,558.74 : x
  2. Step 2: Convert to fraction form
    1,621.61/2,237.05 = 1,558.74/x
  3. Step 3: Cross multiply
    1,621.61x = 2,237.05 × 1,558.74
  4. Step 4: Simplify right side
    1,621.61x = 3,486,971.52
  5. Step 5: Solve for x
    x = 3,486,971.52/1,621.61
  6. Step 6: Final answer
    x = 2,150.31

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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.