Home / 6,389.04-8,812.74-4,119.36

Finding the Fourth Proportional to 6,389.04, 8,812.74 and 4,119.36

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Solution

The fourth proportional to 6,389.04, 8,812.74 and 4,119.36 is: 5,682.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.04 : 8,812.74 = 4,119.36 : x
  2. Step 2: Convert to fraction form
    6,389.04/8,812.74 = 4,119.36/x
  3. Step 3: Cross multiply
    6,389.04x = 8,812.74 × 4,119.36
  4. Step 4: Simplify right side
    6,389.04x = 36,302,848.65
  5. Step 5: Solve for x
    x = 36,302,848.65/6,389.04
  6. Step 6: Final answer
    x = 5,682.05

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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.