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Finding the Fourth Proportional to 5,403.95, 7,457.43 and 2,919.95

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Solution

The fourth proportional to 5,403.95, 7,457.43 and 2,919.95 is: 4,029.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.95 : 7,457.43 = 2,919.95 : x
  2. Step 2: Convert to fraction form
    5,403.95/7,457.43 = 2,919.95/x
  3. Step 3: Cross multiply
    5,403.95x = 7,457.43 × 2,919.95
  4. Step 4: Simplify right side
    5,403.95x = 21,775,285.44
  5. Step 5: Solve for x
    x = 21,775,285.44/5,403.95
  6. Step 6: Final answer
    x = 4,029.52

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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.