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Finding the Fourth Proportional to 9,918.95, 14,878.43 and 2,993.45

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Solution

The fourth proportional to 9,918.95, 14,878.43 and 2,993.45 is: 4,490.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.95 : 14,878.43 = 2,993.45 : x
  2. Step 2: Convert to fraction form
    9,918.95/14,878.43 = 2,993.45/x
  3. Step 3: Cross multiply
    9,918.95x = 14,878.43 × 2,993.45
  4. Step 4: Simplify right side
    9,918.95x = 44,537,746.92
  5. Step 5: Solve for x
    x = 44,537,746.92/9,918.95
  6. Step 6: Final answer
    x = 4,490.17

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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.