Home / 5,126.63-7,690.68-1,615.44

Finding the Fourth Proportional to 5,126.63, 7,690.68 and 1,615.44

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Solution

The fourth proportional to 5,126.63, 7,690.68 and 1,615.44 is: 2,423.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.63 : 7,690.68 = 1,615.44 : x
  2. Step 2: Convert to fraction form
    5,126.63/7,690.68 = 1,615.44/x
  3. Step 3: Cross multiply
    5,126.63x = 7,690.68 × 1,615.44
  4. Step 4: Simplify right side
    5,126.63x = 12,423,860.94
  5. Step 5: Solve for x
    x = 12,423,860.94/5,126.63
  6. Step 6: Final answer
    x = 2,423.40

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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.