Home / 5,678.49-8,515.07-2,389.76

Finding the Fourth Proportional to 5,678.49, 8,515.07 and 2,389.76

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Solution

The fourth proportional to 5,678.49, 8,515.07 and 2,389.76 is: 3,583.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.49 : 8,515.07 = 2,389.76 : x
  2. Step 2: Convert to fraction form
    5,678.49/8,515.07 = 2,389.76/x
  3. Step 3: Cross multiply
    5,678.49x = 8,515.07 × 2,389.76
  4. Step 4: Simplify right side
    5,678.49x = 20,348,973.68
  5. Step 5: Solve for x
    x = 20,348,973.68/5,678.49
  6. Step 6: Final answer
    x = 3,583.52

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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.