Home / 2,011.48-2,775.40-1,127.09

Finding the Fourth Proportional to 2,011.48, 2,775.40 and 1,127.09

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Solution

The fourth proportional to 2,011.48, 2,775.40 and 1,127.09 is: 1,555.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.48 : 2,775.40 = 1,127.09 : x
  2. Step 2: Convert to fraction form
    2,011.48/2,775.40 = 1,127.09/x
  3. Step 3: Cross multiply
    2,011.48x = 2,775.40 × 1,127.09
  4. Step 4: Simplify right side
    2,011.48x = 3,128,129.71
  5. Step 5: Solve for x
    x = 3,128,129.71/2,011.48
  6. Step 6: Final answer
    x = 1,555.14

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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.