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Finding the Fourth Proportional to 2,999.86, 4,140.93 and 2,578.51

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Solution

The fourth proportional to 2,999.86, 4,140.93 and 2,578.51 is: 3,559.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.86 : 4,140.93 = 2,578.51 : x
  2. Step 2: Convert to fraction form
    2,999.86/4,140.93 = 2,578.51/x
  3. Step 3: Cross multiply
    2,999.86x = 4,140.93 × 2,578.51
  4. Step 4: Simplify right side
    2,999.86x = 10,677,444.26
  5. Step 5: Solve for x
    x = 10,677,444.26/2,999.86
  6. Step 6: Final answer
    x = 3,559.32

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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.