Home / 1,504.20-2,073.60-1,238.40

Finding the Fourth Proportional to 1,504.20, 2,073.60 and 1,238.40

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Solution

The fourth proportional to 1,504.20, 2,073.60 and 1,238.40 is: 1,707.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,504.20 : 2,073.60 = 1,238.40 : x
  2. Step 2: Convert to fraction form
    1,504.20/2,073.60 = 1,238.40/x
  3. Step 3: Cross multiply
    1,504.20x = 2,073.60 × 1,238.40
  4. Step 4: Simplify right side
    1,504.20x = 2,567,946.24
  5. Step 5: Solve for x
    x = 2,567,946.24/1,504.20
  6. Step 6: Final answer
    x = 1,707.18

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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.