Home / 7,143.74-10,718.26-2,984.20

Finding the Fourth Proportional to 7,143.74, 10,718.26 and 2,984.20

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Solution

The fourth proportional to 7,143.74, 10,718.26 and 2,984.20 is: 4,477.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.74 : 10,718.26 = 2,984.20 : x
  2. Step 2: Convert to fraction form
    7,143.74/10,718.26 = 2,984.20/x
  3. Step 3: Cross multiply
    7,143.74x = 10,718.26 × 2,984.20
  4. Step 4: Simplify right side
    7,143.74x = 31,985,431.49
  5. Step 5: Solve for x
    x = 31,985,431.49/7,143.74
  6. Step 6: Final answer
    x = 4,477.41

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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.