Home / 1,551.14-2,139.10-1,019.08

Finding the Fourth Proportional to 1,551.14, 2,139.10 and 1,019.08

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Solution

The fourth proportional to 1,551.14, 2,139.10 and 1,019.08 is: 1,405.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.14 : 2,139.10 = 1,019.08 : x
  2. Step 2: Convert to fraction form
    1,551.14/2,139.10 = 1,019.08/x
  3. Step 3: Cross multiply
    1,551.14x = 2,139.10 × 1,019.08
  4. Step 4: Simplify right side
    1,551.14x = 2,179,914.03
  5. Step 5: Solve for x
    x = 2,179,914.03/1,551.14
  6. Step 6: Final answer
    x = 1,405.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.