Home / 6,989.34-10,484.52-1,991.64

Finding the Fourth Proportional to 6,989.34, 10,484.52 and 1,991.64

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Solution

The fourth proportional to 6,989.34, 10,484.52 and 1,991.64 is: 2,987.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.34 : 10,484.52 = 1,991.64 : x
  2. Step 2: Convert to fraction form
    6,989.34/10,484.52 = 1,991.64/x
  3. Step 3: Cross multiply
    6,989.34x = 10,484.52 × 1,991.64
  4. Step 4: Simplify right side
    6,989.34x = 20,881,389.41
  5. Step 5: Solve for x
    x = 20,881,389.41/6,989.34
  6. Step 6: Final answer
    x = 2,987.61

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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.