Home / 5,165.93-7,129.02-2,808.07

Finding the Fourth Proportional to 5,165.93, 7,129.02 and 2,808.07

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Solution

The fourth proportional to 5,165.93, 7,129.02 and 2,808.07 is: 3,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.93 : 7,129.02 = 2,808.07 : x
  2. Step 2: Convert to fraction form
    5,165.93/7,129.02 = 2,808.07/x
  3. Step 3: Cross multiply
    5,165.93x = 7,129.02 × 2,808.07
  4. Step 4: Simplify right side
    5,165.93x = 20,018,769.37
  5. Step 5: Solve for x
    x = 20,018,769.37/5,165.93
  6. Step 6: Final answer
    x = 3,875.15

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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.