Home / 2,140.28-2,953.79-1,300.79

Finding the Fourth Proportional to 2,140.28, 2,953.79 and 1,300.79

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Solution

The fourth proportional to 2,140.28, 2,953.79 and 1,300.79 is: 1,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.28 : 2,953.79 = 1,300.79 : x
  2. Step 2: Convert to fraction form
    2,140.28/2,953.79 = 1,300.79/x
  3. Step 3: Cross multiply
    2,140.28x = 2,953.79 × 1,300.79
  4. Step 4: Simplify right side
    2,140.28x = 3,842,253.99
  5. Step 5: Solve for x
    x = 3,842,253.99/2,140.28
  6. Step 6: Final answer
    x = 1,795.21

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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.