Home / 7,184.13-10,776.38-1,990.05

Finding the Fourth Proportional to 7,184.13, 10,776.38 and 1,990.05

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Solution

The fourth proportional to 7,184.13, 10,776.38 and 1,990.05 is: 2,985.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.13 : 10,776.38 = 1,990.05 : x
  2. Step 2: Convert to fraction form
    7,184.13/10,776.38 = 1,990.05/x
  3. Step 3: Cross multiply
    7,184.13x = 10,776.38 × 1,990.05
  4. Step 4: Simplify right side
    7,184.13x = 21,445,535.02
  5. Step 5: Solve for x
    x = 21,445,535.02/7,184.13
  6. Step 6: Final answer
    x = 2,985.13

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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.