Home / 1,521.36-2,290.95-1,091.52

Finding the Fourth Proportional to 1,521.36, 2,290.95 and 1,091.52

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Solution

The fourth proportional to 1,521.36, 2,290.95 and 1,091.52 is: 1,643.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.36 : 2,290.95 = 1,091.52 : x
  2. Step 2: Convert to fraction form
    1,521.36/2,290.95 = 1,091.52/x
  3. Step 3: Cross multiply
    1,521.36x = 2,290.95 × 1,091.52
  4. Step 4: Simplify right side
    1,521.36x = 2,500,617.74
  5. Step 5: Solve for x
    x = 2,500,617.74/1,521.36
  6. Step 6: Final answer
    x = 1,643.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.