Home / 2,154.40-2,973.64-1,270.79

Finding the Fourth Proportional to 2,154.40, 2,973.64 and 1,270.79

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Solution

The fourth proportional to 2,154.40, 2,973.64 and 1,270.79 is: 1,754.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.40 : 2,973.64 = 1,270.79 : x
  2. Step 2: Convert to fraction form
    2,154.40/2,973.64 = 1,270.79/x
  3. Step 3: Cross multiply
    2,154.40x = 2,973.64 × 1,270.79
  4. Step 4: Simplify right side
    2,154.40x = 3,778,863.89
  5. Step 5: Solve for x
    x = 3,778,863.89/2,154.40
  6. Step 6: Final answer
    x = 1,754.02

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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.