Home / 1,246.63-1,868.26-630.78

Finding the Fourth Proportional to 1,246.63, 1,868.26 and 630.78

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Solution

The fourth proportional to 1,246.63, 1,868.26 and 630.78 is: 945.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.63 : 1,868.26 = 630.78 : x
  2. Step 2: Convert to fraction form
    1,246.63/1,868.26 = 630.78/x
  3. Step 3: Cross multiply
    1,246.63x = 1,868.26 × 630.78
  4. Step 4: Simplify right side
    1,246.63x = 1,178,461.04
  5. Step 5: Solve for x
    x = 1,178,461.04/1,246.63
  6. Step 6: Final answer
    x = 945.32

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1.5x scale

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.