Home / 3,611.51-5,417.83-1,390.26

Finding the Fourth Proportional to 3,611.51, 5,417.83 and 1,390.26

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Solution

The fourth proportional to 3,611.51, 5,417.83 and 1,390.26 is: 2,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.51 : 5,417.83 = 1,390.26 : x
  2. Step 2: Convert to fraction form
    3,611.51/5,417.83 = 1,390.26/x
  3. Step 3: Cross multiply
    3,611.51x = 5,417.83 × 1,390.26
  4. Step 4: Simplify right side
    3,611.51x = 7,532,192.34
  5. Step 5: Solve for x
    x = 7,532,192.34/3,611.51
  6. Step 6: Final answer
    x = 2,085.61

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1.5x scale

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.