Home / 6,389.99-9,575.21-2,690.19

Finding the Fourth Proportional to 6,389.99, 9,575.21 and 2,690.19

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Solution

The fourth proportional to 6,389.99, 9,575.21 and 2,690.19 is: 4,031.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.99 : 9,575.21 = 2,690.19 : x
  2. Step 2: Convert to fraction form
    6,389.99/9,575.21 = 2,690.19/x
  3. Step 3: Cross multiply
    6,389.99x = 9,575.21 × 2,690.19
  4. Step 4: Simplify right side
    6,389.99x = 25,759,120.74
  5. Step 5: Solve for x
    x = 25,759,120.74/6,389.99
  6. Step 6: Final answer
    x = 4,031.17

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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.