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Finding the Fourth Proportional to 9,918.51, 14,888.69 and 5,763.21

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Solution

The fourth proportional to 9,918.51, 14,888.69 and 5,763.21 is: 8,651.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.51 : 14,888.69 = 5,763.21 : x
  2. Step 2: Convert to fraction form
    9,918.51/14,888.69 = 5,763.21/x
  3. Step 3: Cross multiply
    9,918.51x = 14,888.69 × 5,763.21
  4. Step 4: Simplify right side
    9,918.51x = 85,806,647.09
  5. Step 5: Solve for x
    x = 85,806,647.09/9,918.51
  6. Step 6: Final answer
    x = 8,651.16

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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.