Home / 7,130.44-9,840.04-3,987.23

Finding the Fourth Proportional to 7,130.44, 9,840.04 and 3,987.23

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Solution

The fourth proportional to 7,130.44, 9,840.04 and 3,987.23 is: 5,502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.44 : 9,840.04 = 3,987.23 : x
  2. Step 2: Convert to fraction form
    7,130.44/9,840.04 = 3,987.23/x
  3. Step 3: Cross multiply
    7,130.44x = 9,840.04 × 3,987.23
  4. Step 4: Simplify right side
    7,130.44x = 39,234,517.32
  5. Step 5: Solve for x
    x = 39,234,517.32/7,130.44
  6. Step 6: Final answer
    x = 5,502.40

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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.