Home / 6,621.17-9,931.95-1,690.90

Finding the Fourth Proportional to 6,621.17, 9,931.95 and 1,690.90

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Solution

The fourth proportional to 6,621.17, 9,931.95 and 1,690.90 is: 2,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.17 : 9,931.95 = 1,690.90 : x
  2. Step 2: Convert to fraction form
    6,621.17/9,931.95 = 1,690.90/x
  3. Step 3: Cross multiply
    6,621.17x = 9,931.95 × 1,690.90
  4. Step 4: Simplify right side
    6,621.17x = 16,793,909.43
  5. Step 5: Solve for x
    x = 16,793,909.43/6,621.17
  6. Step 6: Final answer
    x = 2,536.40

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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.