Home / 7,142.02-10,712.77-1,876.99

Finding the Fourth Proportional to 7,142.02, 10,712.77 and 1,876.99

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Solution

The fourth proportional to 7,142.02, 10,712.77 and 1,876.99 is: 2,815.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.02 : 10,712.77 = 1,876.99 : x
  2. Step 2: Convert to fraction form
    7,142.02/10,712.77 = 1,876.99/x
  3. Step 3: Cross multiply
    7,142.02x = 10,712.77 × 1,876.99
  4. Step 4: Simplify right side
    7,142.02x = 20,107,762.16
  5. Step 5: Solve for x
    x = 20,107,762.16/7,142.02
  6. Step 6: Final answer
    x = 2,815.42

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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.