Home / 3,285.90-4,543.29-2,870.91

Finding the Fourth Proportional to 3,285.90, 4,543.29 and 2,870.91

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Solution

The fourth proportional to 3,285.90, 4,543.29 and 2,870.91 is: 3,969.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.90 : 4,543.29 = 2,870.91 : x
  2. Step 2: Convert to fraction form
    3,285.90/4,543.29 = 2,870.91/x
  3. Step 3: Cross multiply
    3,285.90x = 4,543.29 × 2,870.91
  4. Step 4: Simplify right side
    3,285.90x = 13,043,376.69
  5. Step 5: Solve for x
    x = 13,043,376.69/3,285.90
  6. Step 6: Final answer
    x = 3,969.50

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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.