Home / 1,551.09-2,139.03-1,048.08

Finding the Fourth Proportional to 1,551.09, 2,139.03 and 1,048.08

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Solution

The fourth proportional to 1,551.09, 2,139.03 and 1,048.08 is: 1,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.09 : 2,139.03 = 1,048.08 : x
  2. Step 2: Convert to fraction form
    1,551.09/2,139.03 = 1,048.08/x
  3. Step 3: Cross multiply
    1,551.09x = 2,139.03 × 1,048.08
  4. Step 4: Simplify right side
    1,551.09x = 2,241,874.56
  5. Step 5: Solve for x
    x = 2,241,874.56/1,551.09
  6. Step 6: Final answer
    x = 1,445.35

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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.