Home / 2,139.03-2,950.80-1,666.08

Finding the Fourth Proportional to 2,139.03, 2,950.80 and 1,666.08

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Solution

The fourth proportional to 2,139.03, 2,950.80 and 1,666.08 is: 2,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.03 : 2,950.80 = 1,666.08 : x
  2. Step 2: Convert to fraction form
    2,139.03/2,950.80 = 1,666.08/x
  3. Step 3: Cross multiply
    2,139.03x = 2,950.80 × 1,666.08
  4. Step 4: Simplify right side
    2,139.03x = 4,916,268.86
  5. Step 5: Solve for x
    x = 4,916,268.86/2,139.03
  6. Step 6: Final answer
    x = 2,298.36

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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.