Home / 5,478.74-7,558.81-3,119.21

Finding the Fourth Proportional to 5,478.74, 7,558.81 and 3,119.21

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Solution

The fourth proportional to 5,478.74, 7,558.81 and 3,119.21 is: 4,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.74 : 7,558.81 = 3,119.21 : x
  2. Step 2: Convert to fraction form
    5,478.74/7,558.81 = 3,119.21/x
  3. Step 3: Cross multiply
    5,478.74x = 7,558.81 × 3,119.21
  4. Step 4: Simplify right side
    5,478.74x = 23,577,462.35
  5. Step 5: Solve for x
    x = 23,577,462.35/5,478.74
  6. Step 6: Final answer
    x = 4,303.45

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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.