Home / 7,358.90-10,155.08-4,215.28

Finding the Fourth Proportional to 7,358.90, 10,155.08 and 4,215.28

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Solution

The fourth proportional to 7,358.90, 10,155.08 and 4,215.28 is: 5,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,358.90 : 10,155.08 = 4,215.28 : x
  2. Step 2: Convert to fraction form
    7,358.90/10,155.08 = 4,215.28/x
  3. Step 3: Cross multiply
    7,358.90x = 10,155.08 × 4,215.28
  4. Step 4: Simplify right side
    7,358.90x = 42,806,505.62
  5. Step 5: Solve for x
    x = 42,806,505.62/7,358.90
  6. Step 6: Final answer
    x = 5,816.97

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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.