Home / 3,420.81-4,720.70-1,848.90

Finding the Fourth Proportional to 3,420.81, 4,720.70 and 1,848.90

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Solution

The fourth proportional to 3,420.81, 4,720.70 and 1,848.90 is: 2,551.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.81 : 4,720.70 = 1,848.90 : x
  2. Step 2: Convert to fraction form
    3,420.81/4,720.70 = 1,848.90/x
  3. Step 3: Cross multiply
    3,420.81x = 4,720.70 × 1,848.90
  4. Step 4: Simplify right side
    3,420.81x = 8,728,106.85
  5. Step 5: Solve for x
    x = 8,728,106.85/3,420.81
  6. Step 6: Final answer
    x = 2,551.47

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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.