Home / 2,130.36-2,939.52-1,344.64

Finding the Fourth Proportional to 2,130.36, 2,939.52 and 1,344.64

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Solution

The fourth proportional to 2,130.36, 2,939.52 and 1,344.64 is: 1,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.36 : 2,939.52 = 1,344.64 : x
  2. Step 2: Convert to fraction form
    2,130.36/2,939.52 = 1,344.64/x
  3. Step 3: Cross multiply
    2,130.36x = 2,939.52 × 1,344.64
  4. Step 4: Simplify right side
    2,130.36x = 3,952,596.17
  5. Step 5: Solve for x
    x = 3,952,596.17/2,130.36
  6. Step 6: Final answer
    x = 1,855.37

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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.