Home / 5,153.11-7,730.21-1,690.63

Finding the Fourth Proportional to 5,153.11, 7,730.21 and 1,690.63

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Solution

The fourth proportional to 5,153.11, 7,730.21 and 1,690.63 is: 2,536.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.11 : 7,730.21 = 1,690.63 : x
  2. Step 2: Convert to fraction form
    5,153.11/7,730.21 = 1,690.63/x
  3. Step 3: Cross multiply
    5,153.11x = 7,730.21 × 1,690.63
  4. Step 4: Simplify right side
    5,153.11x = 13,068,924.93
  5. Step 5: Solve for x
    x = 13,068,924.93/5,153.11
  6. Step 6: Final answer
    x = 2,536.12

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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.