Home / 7,320.78-10,102.32-4,176.36

Finding the Fourth Proportional to 7,320.78, 10,102.32 and 4,176.36

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Solution

The fourth proportional to 7,320.78, 10,102.32 and 4,176.36 is: 5,763.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.78 : 10,102.32 = 4,176.36 : x
  2. Step 2: Convert to fraction form
    7,320.78/10,102.32 = 4,176.36/x
  3. Step 3: Cross multiply
    7,320.78x = 10,102.32 × 4,176.36
  4. Step 4: Simplify right side
    7,320.78x = 42,190,925.16
  5. Step 5: Solve for x
    x = 42,190,925.16/7,320.78
  6. Step 6: Final answer
    x = 5,763.17

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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.