Home / 1,555.80-2,336.40-1,507.20

Finding the Fourth Proportional to 1,555.80, 2,336.40 and 1,507.20

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Solution

The fourth proportional to 1,555.80, 2,336.40 and 1,507.20 is: 2,263.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.80 : 2,336.40 = 1,507.20 : x
  2. Step 2: Convert to fraction form
    1,555.80/2,336.40 = 1,507.20/x
  3. Step 3: Cross multiply
    1,555.80x = 2,336.40 × 1,507.20
  4. Step 4: Simplify right side
    1,555.80x = 3,521,422.08
  5. Step 5: Solve for x
    x = 3,521,422.08/1,555.80
  6. Step 6: Final answer
    x = 2,263.42

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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.