Home / 1,290.18-1,776.85-1,053.03

Finding the Fourth Proportional to 1,290.18, 1,776.85 and 1,053.03

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Solution

The fourth proportional to 1,290.18, 1,776.85 and 1,053.03 is: 1,450.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.18 : 1,776.85 = 1,053.03 : x
  2. Step 2: Convert to fraction form
    1,290.18/1,776.85 = 1,053.03/x
  3. Step 3: Cross multiply
    1,290.18x = 1,776.85 × 1,053.03
  4. Step 4: Simplify right side
    1,290.18x = 1,871,076.36
  5. Step 5: Solve for x
    x = 1,871,076.36/1,290.18
  6. Step 6: Final answer
    x = 1,450.24

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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.