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Finding the Fourth Proportional to 9,319, 12,860.22 and 5,127.16

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Solution

The fourth proportional to 9,319, 12,860.22 and 5,127.16 is: 7,075.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319 : 12,860.22 = 5,127.16 : x
  2. Step 2: Convert to fraction form
    9,319/12,860.22 = 5,127.16/x
  3. Step 3: Cross multiply
    9,319x = 12,860.22 × 5,127.16
  4. Step 4: Simplify right side
    9,319x = 65,936,405.58
  5. Step 5: Solve for x
    x = 65,936,405.58/9,319
  6. Step 6: Final answer
    x = 7,075.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.