Home / 1,911.20-2,637.36-1,124.96

Finding the Fourth Proportional to 1,911.20, 2,637.36 and 1,124.96

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Solution

The fourth proportional to 1,911.20, 2,637.36 and 1,124.96 is: 1,552.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.20 : 2,637.36 = 1,124.96 : x
  2. Step 2: Convert to fraction form
    1,911.20/2,637.36 = 1,124.96/x
  3. Step 3: Cross multiply
    1,911.20x = 2,637.36 × 1,124.96
  4. Step 4: Simplify right side
    1,911.20x = 2,966,924.51
  5. Step 5: Solve for x
    x = 2,966,924.51/1,911.20
  6. Step 6: Final answer
    x = 1,552.39

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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.