Home / 1,555.12-2,335.01-1,338.10

Finding the Fourth Proportional to 1,555.12, 2,335.01 and 1,338.10

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Solution

The fourth proportional to 1,555.12, 2,335.01 and 1,338.10 is: 2,009.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.12 : 2,335.01 = 1,338.10 : x
  2. Step 2: Convert to fraction form
    1,555.12/2,335.01 = 1,338.10/x
  3. Step 3: Cross multiply
    1,555.12x = 2,335.01 × 1,338.10
  4. Step 4: Simplify right side
    1,555.12x = 3,124,477.49
  5. Step 5: Solve for x
    x = 3,124,477.49/1,555.12
  6. Step 6: Final answer
    x = 2,009.16

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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.