Home / 7,140.24-10,710.05-1,946.12

Finding the Fourth Proportional to 7,140.24, 10,710.05 and 1,946.12

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Solution

The fourth proportional to 7,140.24, 10,710.05 and 1,946.12 is: 2,919.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.24 : 10,710.05 = 1,946.12 : x
  2. Step 2: Convert to fraction form
    7,140.24/10,710.05 = 1,946.12/x
  3. Step 3: Cross multiply
    7,140.24x = 10,710.05 × 1,946.12
  4. Step 4: Simplify right side
    7,140.24x = 20,842,979.23
  5. Step 5: Solve for x
    x = 20,842,979.23/7,140.24
  6. Step 6: Final answer
    x = 2,919.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.