Home / 6,621.10-9,931.56-1,690.72

Finding the Fourth Proportional to 6,621.10, 9,931.56 and 1,690.72

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Solution

The fourth proportional to 6,621.10, 9,931.56 and 1,690.72 is: 2,536.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.10 : 9,931.56 = 1,690.72 : x
  2. Step 2: Convert to fraction form
    6,621.10/9,931.56 = 1,690.72/x
  3. Step 3: Cross multiply
    6,621.10x = 9,931.56 × 1,690.72
  4. Step 4: Simplify right side
    6,621.10x = 16,791,487.12
  5. Step 5: Solve for x
    x = 16,791,487.12/6,621.10
  6. Step 6: Final answer
    x = 2,536.06

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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.