Home / 2,901.42-4,003.79-1,690.47

Finding the Fourth Proportional to 2,901.42, 4,003.79 and 1,690.47

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Solution

The fourth proportional to 2,901.42, 4,003.79 and 1,690.47 is: 2,332.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,901.42 : 4,003.79 = 1,690.47 : x
  2. Step 2: Convert to fraction form
    2,901.42/4,003.79 = 1,690.47/x
  3. Step 3: Cross multiply
    2,901.42x = 4,003.79 × 1,690.47
  4. Step 4: Simplify right side
    2,901.42x = 6,768,266.86
  5. Step 5: Solve for x
    x = 6,768,266.86/2,901.42
  6. Step 6: Final answer
    x = 2,332.75

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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.