Home / 9,318.50-12,859.80-5,127.02

Finding the Fourth Proportional to 9,318.50, 12,859.80 and 5,127.02

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Solution

The fourth proportional to 9,318.50, 12,859.80 and 5,127.02 is: 7,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.50 : 12,859.80 = 5,127.02 : x
  2. Step 2: Convert to fraction form
    9,318.50/12,859.80 = 5,127.02/x
  3. Step 3: Cross multiply
    9,318.50x = 12,859.80 × 5,127.02
  4. Step 4: Simplify right side
    9,318.50x = 65,932,451.80
  5. Step 5: Solve for x
    x = 65,932,451.80/9,318.50
  6. Step 6: Final answer
    x = 7,075.44

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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.