Home / 1,901.72-2,624.20-1,115.62

Finding the Fourth Proportional to 1,901.72, 2,624.20 and 1,115.62

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Solution

The fourth proportional to 1,901.72, 2,624.20 and 1,115.62 is: 1,539.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.72 : 2,624.20 = 1,115.62 : x
  2. Step 2: Convert to fraction form
    1,901.72/2,624.20 = 1,115.62/x
  3. Step 3: Cross multiply
    1,901.72x = 2,624.20 × 1,115.62
  4. Step 4: Simplify right side
    1,901.72x = 2,927,600.65
  5. Step 5: Solve for x
    x = 2,927,600.65/1,901.72
  6. Step 6: Final answer
    x = 1,539.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.