Home / 7,271.77-10,912.43-3,987.19

Finding the Fourth Proportional to 7,271.77, 10,912.43 and 3,987.19

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Solution

The fourth proportional to 7,271.77, 10,912.43 and 3,987.19 is: 5,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,271.77 : 10,912.43 = 3,987.19 : x
  2. Step 2: Convert to fraction form
    7,271.77/10,912.43 = 3,987.19/x
  3. Step 3: Cross multiply
    7,271.77x = 10,912.43 × 3,987.19
  4. Step 4: Simplify right side
    7,271.77x = 43,509,931.77
  5. Step 5: Solve for x
    x = 43,509,931.77/7,271.77
  6. Step 6: Final answer
    x = 5,983.40

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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.