Home / 6,621.25-9,931.87-1,690.71

Finding the Fourth Proportional to 6,621.25, 9,931.87 and 1,690.71

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Solution

The fourth proportional to 6,621.25, 9,931.87 and 1,690.71 is: 2,536.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.25 : 9,931.87 = 1,690.71 : x
  2. Step 2: Convert to fraction form
    6,621.25/9,931.87 = 1,690.71/x
  3. Step 3: Cross multiply
    6,621.25x = 9,931.87 × 1,690.71
  4. Step 4: Simplify right side
    6,621.25x = 16,791,911.93
  5. Step 5: Solve for x
    x = 16,791,911.93/6,621.25
  6. Step 6: Final answer
    x = 2,536.07

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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.