Home / 1,555.42-2,319.20-1,536.22

Finding the Fourth Proportional to 1,555.42, 2,319.20 and 1,536.22

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Solution

The fourth proportional to 1,555.42, 2,319.20 and 1,536.22 is: 2,290.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.42 : 2,319.20 = 1,536.22 : x
  2. Step 2: Convert to fraction form
    1,555.42/2,319.20 = 1,536.22/x
  3. Step 3: Cross multiply
    1,555.42x = 2,319.20 × 1,536.22
  4. Step 4: Simplify right side
    1,555.42x = 3,562,801.42
  5. Step 5: Solve for x
    x = 3,562,801.42/1,555.42
  6. Step 6: Final answer
    x = 2,290.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.