Home / 1,558.99-2,148.88-1,356.59

Finding the Fourth Proportional to 1,558.99, 2,148.88 and 1,356.59

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Solution

The fourth proportional to 1,558.99, 2,148.88 and 1,356.59 is: 1,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.99 : 2,148.88 = 1,356.59 : x
  2. Step 2: Convert to fraction form
    1,558.99/2,148.88 = 1,356.59/x
  3. Step 3: Cross multiply
    1,558.99x = 2,148.88 × 1,356.59
  4. Step 4: Simplify right side
    1,558.99x = 2,915,149.12
  5. Step 5: Solve for x
    x = 2,915,149.12/1,558.99
  6. Step 6: Final answer
    x = 1,869.90

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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.