Home / 2,909.07-4,012.67-1,913.99

Finding the Fourth Proportional to 2,909.07, 4,012.67 and 1,913.99

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Solution

The fourth proportional to 2,909.07, 4,012.67 and 1,913.99 is: 2,640.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.07 : 4,012.67 = 1,913.99 : x
  2. Step 2: Convert to fraction form
    2,909.07/4,012.67 = 1,913.99/x
  3. Step 3: Cross multiply
    2,909.07x = 4,012.67 × 1,913.99
  4. Step 4: Simplify right side
    2,909.07x = 7,680,194.97
  5. Step 5: Solve for x
    x = 7,680,194.97/2,909.07
  6. Step 6: Final answer
    x = 2,640.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.