Home / 4,285.85-6,420.47-2,431.35

Finding the Fourth Proportional to 4,285.85, 6,420.47 and 2,431.35

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Solution

The fourth proportional to 4,285.85, 6,420.47 and 2,431.35 is: 3,642.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,285.85 : 6,420.47 = 2,431.35 : x
  2. Step 2: Convert to fraction form
    4,285.85/6,420.47 = 2,431.35/x
  3. Step 3: Cross multiply
    4,285.85x = 6,420.47 × 2,431.35
  4. Step 4: Simplify right side
    4,285.85x = 15,610,397.58
  5. Step 5: Solve for x
    x = 15,610,397.58/4,285.85
  6. Step 6: Final answer
    x = 3,642.32

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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.