Home / 2,575.70-3,555.18-1,528.40

Finding the Fourth Proportional to 2,575.70, 3,555.18 and 1,528.40

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Solution

The fourth proportional to 2,575.70, 3,555.18 and 1,528.40 is: 2,109.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,575.70 : 3,555.18 = 1,528.40 : x
  2. Step 2: Convert to fraction form
    2,575.70/3,555.18 = 1,528.40/x
  3. Step 3: Cross multiply
    2,575.70x = 3,555.18 × 1,528.40
  4. Step 4: Simplify right side
    2,575.70x = 5,433,737.11
  5. Step 5: Solve for x
    x = 5,433,737.11/2,575.70
  6. Step 6: Final answer
    x = 2,109.62

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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.