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Finding the Fourth Proportional to 9,918.74, 14,878.83 and 3,342.74

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Solution

The fourth proportional to 9,918.74, 14,878.83 and 3,342.74 is: 5,014.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.74 : 14,878.83 = 3,342.74 : x
  2. Step 2: Convert to fraction form
    9,918.74/14,878.83 = 3,342.74/x
  3. Step 3: Cross multiply
    9,918.74x = 14,878.83 × 3,342.74
  4. Step 4: Simplify right side
    9,918.74x = 49,736,060.19
  5. Step 5: Solve for x
    x = 49,736,060.19/9,918.74
  6. Step 6: Final answer
    x = 5,014.35

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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.