Home / 7,412.66-11,118.60-1,866.00

Finding the Fourth Proportional to 7,412.66, 11,118.60 and 1,866.00

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Solution

The fourth proportional to 7,412.66, 11,118.60 and 1,866.00 is: 2,798.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.66 : 11,118.60 = 1,866.00 : x
  2. Step 2: Convert to fraction form
    7,412.66/11,118.60 = 1,866.00/x
  3. Step 3: Cross multiply
    7,412.66x = 11,118.60 × 1,866.00
  4. Step 4: Simplify right side
    7,412.66x = 20,747,349.29
  5. Step 5: Solve for x
    x = 20,747,349.29/7,412.66
  6. Step 6: Final answer
    x = 2,798.91

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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.