Home / 1,485.63-2,228.72-619.88

Finding the Fourth Proportional to 1,485.63, 2,228.72 and 619.88

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Solution

The fourth proportional to 1,485.63, 2,228.72 and 619.88 is: 929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.63 : 2,228.72 = 619.88 : x
  2. Step 2: Convert to fraction form
    1,485.63/2,228.72 = 619.88/x
  3. Step 3: Cross multiply
    1,485.63x = 2,228.72 × 619.88
  4. Step 4: Simplify right side
    1,485.63x = 1,381,524.71
  5. Step 5: Solve for x
    x = 1,381,524.71/1,485.63
  6. Step 6: Final answer
    x = 929.93

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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.