Home / 5,478.51-7,558.47-3,120.06

Finding the Fourth Proportional to 5,478.51, 7,558.47 and 3,120.06

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Solution

The fourth proportional to 5,478.51, 7,558.47 and 3,120.06 is: 4,304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.51 : 7,558.47 = 3,120.06 : x
  2. Step 2: Convert to fraction form
    5,478.51/7,558.47 = 3,120.06/x
  3. Step 3: Cross multiply
    5,478.51x = 7,558.47 × 3,120.06
  4. Step 4: Simplify right side
    5,478.51x = 23,582,879.91
  5. Step 5: Solve for x
    x = 23,582,879.91/5,478.51
  6. Step 6: Final answer
    x = 4,304.62

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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.