Home / 7,042.78-10,565.64-3,345.40

Finding the Fourth Proportional to 7,042.78, 10,565.64 and 3,345.40

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Solution

The fourth proportional to 7,042.78, 10,565.64 and 3,345.40 is: 5,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.78 : 10,565.64 = 3,345.40 : x
  2. Step 2: Convert to fraction form
    7,042.78/10,565.64 = 3,345.40/x
  3. Step 3: Cross multiply
    7,042.78x = 10,565.64 × 3,345.40
  4. Step 4: Simplify right side
    7,042.78x = 35,346,292.06
  5. Step 5: Solve for x
    x = 35,346,292.06/7,042.78
  6. Step 6: Final answer
    x = 5,018.80

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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.