Home / 4,986.36-7,482.78-2,389.50

Finding the Fourth Proportional to 4,986.36, 7,482.78 and 2,389.50

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Solution

The fourth proportional to 4,986.36, 7,482.78 and 2,389.50 is: 3,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.36 : 7,482.78 = 2,389.50 : x
  2. Step 2: Convert to fraction form
    4,986.36/7,482.78 = 2,389.50/x
  3. Step 3: Cross multiply
    4,986.36x = 7,482.78 × 2,389.50
  4. Step 4: Simplify right side
    4,986.36x = 17,880,102.81
  5. Step 5: Solve for x
    x = 17,880,102.81/4,986.36
  6. Step 6: Final answer
    x = 3,585.80

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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.