Home / 6,987.12-10,474.74-3,089.40

Finding the Fourth Proportional to 6,987.12, 10,474.74 and 3,089.40

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Solution

The fourth proportional to 6,987.12, 10,474.74 and 3,089.40 is: 4,631.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.12 : 10,474.74 = 3,089.40 : x
  2. Step 2: Convert to fraction form
    6,987.12/10,474.74 = 3,089.40/x
  3. Step 3: Cross multiply
    6,987.12x = 10,474.74 × 3,089.40
  4. Step 4: Simplify right side
    6,987.12x = 32,360,661.76
  5. Step 5: Solve for x
    x = 32,360,661.76/6,987.12
  6. Step 6: Final answer
    x = 4,631.47

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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.