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Finding the Fourth Proportional to 1,866.99, 2,800.49 and 1,558.08

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Solution

The fourth proportional to 1,866.99, 2,800.49 and 1,558.08 is: 2,337.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.99 : 2,800.49 = 1,558.08 : x
  2. Step 2: Convert to fraction form
    1,866.99/2,800.49 = 1,558.08/x
  3. Step 3: Cross multiply
    1,866.99x = 2,800.49 × 1,558.08
  4. Step 4: Simplify right side
    1,866.99x = 4,363,379.67
  5. Step 5: Solve for x
    x = 4,363,379.67/1,866.99
  6. Step 6: Final answer
    x = 2,337.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.