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Finding the Fourth Proportional to 2,595.92, 3,893.94 and 1,980.72

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Solution

The fourth proportional to 2,595.92, 3,893.94 and 1,980.72 is: 2,971.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,595.92 : 3,893.94 = 1,980.72 : x
  2. Step 2: Convert to fraction form
    2,595.92/3,893.94 = 1,980.72/x
  3. Step 3: Cross multiply
    2,595.92x = 3,893.94 × 1,980.72
  4. Step 4: Simplify right side
    2,595.92x = 7,712,804.84
  5. Step 5: Solve for x
    x = 7,712,804.84/2,595.92
  6. Step 6: Final answer
    x = 2,971.13

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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.