Home / 2,590.78-3,576.48-1,528.21

Finding the Fourth Proportional to 2,590.78, 3,576.48 and 1,528.21

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Solution

The fourth proportional to 2,590.78, 3,576.48 and 1,528.21 is: 2,109.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,590.78 : 3,576.48 = 1,528.21 : x
  2. Step 2: Convert to fraction form
    2,590.78/3,576.48 = 1,528.21/x
  3. Step 3: Cross multiply
    2,590.78x = 3,576.48 × 1,528.21
  4. Step 4: Simplify right side
    2,590.78x = 5,465,612.50
  5. Step 5: Solve for x
    x = 5,465,612.50/2,590.78
  6. Step 6: Final answer
    x = 2,109.64

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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.