Home / 2,140.40-2,952.20-1,395

Finding the Fourth Proportional to 2,140.40, 2,952.20 and 1,395

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Solution

The fourth proportional to 2,140.40, 2,952.20 and 1,395 is: 1,924.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.40 : 2,952.20 = 1,395 : x
  2. Step 2: Convert to fraction form
    2,140.40/2,952.20 = 1,395/x
  3. Step 3: Cross multiply
    2,140.40x = 2,952.20 × 1,395
  4. Step 4: Simplify right side
    2,140.40x = 4,118,319.00
  5. Step 5: Solve for x
    x = 4,118,319.00/2,140.40
  6. Step 6: Final answer
    x = 1,924.09

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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.