Home / 1,615.36-2,211.20-1,562.88

Finding the Fourth Proportional to 1,615.36, 2,211.20 and 1,562.88

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Solution

The fourth proportional to 1,615.36, 2,211.20 and 1,562.88 is: 2,139.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.36 : 2,211.20 = 1,562.88 : x
  2. Step 2: Convert to fraction form
    1,615.36/2,211.20 = 1,562.88/x
  3. Step 3: Cross multiply
    1,615.36x = 2,211.20 × 1,562.88
  4. Step 4: Simplify right side
    1,615.36x = 3,455,840.26
  5. Step 5: Solve for x
    x = 3,455,840.26/1,615.36
  6. Step 6: Final answer
    x = 2,139.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.