Home / 1,389.19-2,083.74-464.76

Finding the Fourth Proportional to 1,389.19, 2,083.74 and 464.76

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Solution

The fourth proportional to 1,389.19, 2,083.74 and 464.76 is: 697.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389.19 : 2,083.74 = 464.76 : x
  2. Step 2: Convert to fraction form
    1,389.19/2,083.74 = 464.76/x
  3. Step 3: Cross multiply
    1,389.19x = 2,083.74 × 464.76
  4. Step 4: Simplify right side
    1,389.19x = 968,439.00
  5. Step 5: Solve for x
    x = 968,439.00/1,389.19
  6. Step 6: Final answer
    x = 697.12

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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.