Home / 2,865.41-3,951.70-1,968.74

Finding the Fourth Proportional to 2,865.41, 3,951.70 and 1,968.74

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Solution

The fourth proportional to 2,865.41, 3,951.70 and 1,968.74 is: 2,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.41 : 3,951.70 = 1,968.74 : x
  2. Step 2: Convert to fraction form
    2,865.41/3,951.70 = 1,968.74/x
  3. Step 3: Cross multiply
    2,865.41x = 3,951.70 × 1,968.74
  4. Step 4: Simplify right side
    2,865.41x = 7,779,869.86
  5. Step 5: Solve for x
    x = 7,779,869.86/2,865.41
  6. Step 6: Final answer
    x = 2,715.10

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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.