Home / 1,901.28-2,624.80-1,115.32

Finding the Fourth Proportional to 1,901.28, 2,624.80 and 1,115.32

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Solution

The fourth proportional to 1,901.28, 2,624.80 and 1,115.32 is: 1,539.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,901.28 : 2,624.80 = 1,115.32 : x
  2. Step 2: Convert to fraction form
    1,901.28/2,624.80 = 1,115.32/x
  3. Step 3: Cross multiply
    1,901.28x = 2,624.80 × 1,115.32
  4. Step 4: Simplify right side
    1,901.28x = 2,927,491.94
  5. Step 5: Solve for x
    x = 2,927,491.94/1,901.28
  6. Step 6: Final answer
    x = 1,539.75

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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.