Home / 1,247.04-1,869.84-477.36

Finding the Fourth Proportional to 1,247.04, 1,869.84 and 477.36

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Solution

The fourth proportional to 1,247.04, 1,869.84 and 477.36 is: 715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.04 : 1,869.84 = 477.36 : x
  2. Step 2: Convert to fraction form
    1,247.04/1,869.84 = 477.36/x
  3. Step 3: Cross multiply
    1,247.04x = 1,869.84 × 477.36
  4. Step 4: Simplify right side
    1,247.04x = 892,586.82
  5. Step 5: Solve for x
    x = 892,586.82/1,247.04
  6. Step 6: Final answer
    x = 715.76

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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.