Home / 6,621-9,931.47-5,161.23

Finding the Fourth Proportional to 6,621, 9,931.47 and 5,161.23

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Solution

The fourth proportional to 6,621, 9,931.47 and 5,161.23 is: 7,741.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621 : 9,931.47 = 5,161.23 : x
  2. Step 2: Convert to fraction form
    6,621/9,931.47 = 5,161.23/x
  3. Step 3: Cross multiply
    6,621x = 9,931.47 × 5,161.23
  4. Step 4: Simplify right side
    6,621x = 51,258,600.91
  5. Step 5: Solve for x
    x = 51,258,600.91/6,621
  6. Step 6: Final answer
    x = 7,741.82

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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.