Home / 2,901.43-4,350.69-1,420.78

Finding the Fourth Proportional to 2,901.43, 4,350.69 and 1,420.78

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Solution

The fourth proportional to 2,901.43, 4,350.69 and 1,420.78 is: 2,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,901.43 : 4,350.69 = 1,420.78 : x
  2. Step 2: Convert to fraction form
    2,901.43/4,350.69 = 1,420.78/x
  3. Step 3: Cross multiply
    2,901.43x = 4,350.69 × 1,420.78
  4. Step 4: Simplify right side
    2,901.43x = 6,181,373.34
  5. Step 5: Solve for x
    x = 6,181,373.34/2,901.43
  6. Step 6: Final answer
    x = 2,130.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.