Home / 7,389.99-10,199.79-4,406.40

Finding the Fourth Proportional to 7,389.99, 10,199.79 and 4,406.40

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Solution

The fourth proportional to 7,389.99, 10,199.79 and 4,406.40 is: 6,081.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,389.99 : 10,199.79 = 4,406.40 : x
  2. Step 2: Convert to fraction form
    7,389.99/10,199.79 = 4,406.40/x
  3. Step 3: Cross multiply
    7,389.99x = 10,199.79 × 4,406.40
  4. Step 4: Simplify right side
    7,389.99x = 44,944,354.66
  5. Step 5: Solve for x
    x = 44,944,354.66/7,389.99
  6. Step 6: Final answer
    x = 6,081.79

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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.