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Finding the Fourth Proportional to 9,918.94, 14,879.37 and 2,898.80

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Solution

The fourth proportional to 9,918.94, 14,879.37 and 2,898.80 is: 4,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.94 : 14,879.37 = 2,898.80 : x
  2. Step 2: Convert to fraction form
    9,918.94/14,879.37 = 2,898.80/x
  3. Step 3: Cross multiply
    9,918.94x = 14,879.37 × 2,898.80
  4. Step 4: Simplify right side
    9,918.94x = 43,132,239.74
  5. Step 5: Solve for x
    x = 43,132,239.74/9,918.94
  6. Step 6: Final answer
    x = 4,348.47

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1.5x scale

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.