Home / 5,478.02-7,557.78-3,119.56

Finding the Fourth Proportional to 5,478.02, 7,557.78 and 3,119.56

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Solution

The fourth proportional to 5,478.02, 7,557.78 and 3,119.56 is: 4,303.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.02 : 7,557.78 = 3,119.56 : x
  2. Step 2: Convert to fraction form
    5,478.02/7,557.78 = 3,119.56/x
  3. Step 3: Cross multiply
    5,478.02x = 7,557.78 × 3,119.56
  4. Step 4: Simplify right side
    5,478.02x = 23,576,948.18
  5. Step 5: Solve for x
    x = 23,576,948.18/5,478.02
  6. Step 6: Final answer
    x = 4,303.92

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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.