Home / 3,126.09-4,690.95-1,276.92

Finding the Fourth Proportional to 3,126.09, 4,690.95 and 1,276.92

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Solution

The fourth proportional to 3,126.09, 4,690.95 and 1,276.92 is: 1,916.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.09 : 4,690.95 = 1,276.92 : x
  2. Step 2: Convert to fraction form
    3,126.09/4,690.95 = 1,276.92/x
  3. Step 3: Cross multiply
    3,126.09x = 4,690.95 × 1,276.92
  4. Step 4: Simplify right side
    3,126.09x = 5,989,967.87
  5. Step 5: Solve for x
    x = 5,989,967.87/3,126.09
  6. Step 6: Final answer
    x = 1,916.12

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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.