Home / 6,389.40-9,584.10-5,368.80

Finding the Fourth Proportional to 6,389.40, 9,584.10 and 5,368.80

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Solution

The fourth proportional to 6,389.40, 9,584.10 and 5,368.80 is: 8,053.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.40 : 9,584.10 = 5,368.80 : x
  2. Step 2: Convert to fraction form
    6,389.40/9,584.10 = 5,368.80/x
  3. Step 3: Cross multiply
    6,389.40x = 9,584.10 × 5,368.80
  4. Step 4: Simplify right side
    6,389.40x = 51,455,116.08
  5. Step 5: Solve for x
    x = 51,455,116.08/6,389.40
  6. Step 6: Final answer
    x = 8,053.20

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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.