Home / 4,389.40-6,584.10-1,311.40

Finding the Fourth Proportional to 4,389.40, 6,584.10 and 1,311.40

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Solution

The fourth proportional to 4,389.40, 6,584.10 and 1,311.40 is: 1,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,389.40 : 6,584.10 = 1,311.40 : x
  2. Step 2: Convert to fraction form
    4,389.40/6,584.10 = 1,311.40/x
  3. Step 3: Cross multiply
    4,389.40x = 6,584.10 × 1,311.40
  4. Step 4: Simplify right side
    4,389.40x = 8,634,388.74
  5. Step 5: Solve for x
    x = 8,634,388.74/4,389.40
  6. Step 6: Final answer
    x = 1,967.10

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Similar ratio
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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.