Home / 1,561.16-2,334.86-1,389.04

Finding the Fourth Proportional to 1,561.16, 2,334.86 and 1,389.04

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Solution

The fourth proportional to 1,561.16, 2,334.86 and 1,389.04 is: 2,077.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.16 : 2,334.86 = 1,389.04 : x
  2. Step 2: Convert to fraction form
    1,561.16/2,334.86 = 1,389.04/x
  3. Step 3: Cross multiply
    1,561.16x = 2,334.86 × 1,389.04
  4. Step 4: Simplify right side
    1,561.16x = 3,243,206.36
  5. Step 5: Solve for x
    x = 3,243,206.36/1,561.16
  6. Step 6: Final answer
    x = 2,077.43

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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.