Home / 7,345.86-10,137.19-4,159.78

Finding the Fourth Proportional to 7,345.86, 10,137.19 and 4,159.78

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Solution

The fourth proportional to 7,345.86, 10,137.19 and 4,159.78 is: 5,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.86 : 10,137.19 = 4,159.78 : x
  2. Step 2: Convert to fraction form
    7,345.86/10,137.19 = 4,159.78/x
  3. Step 3: Cross multiply
    7,345.86x = 10,137.19 × 4,159.78
  4. Step 4: Simplify right side
    7,345.86x = 42,168,480.22
  5. Step 5: Solve for x
    x = 42,168,480.22/7,345.86
  6. Step 6: Final answer
    x = 5,740.44

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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.