Home / 9,318.90-12,859.80-5,127.14

Finding the Fourth Proportional to 9,318.90, 12,859.80 and 5,127.14

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Solution

The fourth proportional to 9,318.90, 12,859.80 and 5,127.14 is: 7,075.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.90 : 12,859.80 = 5,127.14 : x
  2. Step 2: Convert to fraction form
    9,318.90/12,859.80 = 5,127.14/x
  3. Step 3: Cross multiply
    9,318.90x = 12,859.80 × 5,127.14
  4. Step 4: Simplify right side
    9,318.90x = 65,933,994.97
  5. Step 5: Solve for x
    x = 65,933,994.97/9,318.90
  6. Step 6: Final answer
    x = 7,075.30

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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.