Home / 2,130.18-2,939.94-1,346.51

Finding the Fourth Proportional to 2,130.18, 2,939.94 and 1,346.51

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Solution

The fourth proportional to 2,130.18, 2,939.94 and 1,346.51 is: 1,858.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.18 : 2,939.94 = 1,346.51 : x
  2. Step 2: Convert to fraction form
    2,130.18/2,939.94 = 1,346.51/x
  3. Step 3: Cross multiply
    2,130.18x = 2,939.94 × 1,346.51
  4. Step 4: Simplify right side
    2,130.18x = 3,958,643.91
  5. Step 5: Solve for x
    x = 3,958,643.91/2,130.18
  6. Step 6: Final answer
    x = 1,858.36

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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.