Home / 5,485.71-7,569.81-3,127.80

Finding the Fourth Proportional to 5,485.71, 7,569.81 and 3,127.80

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Solution

The fourth proportional to 5,485.71, 7,569.81 and 3,127.80 is: 4,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.71 : 7,569.81 = 3,127.80 : x
  2. Step 2: Convert to fraction form
    5,485.71/7,569.81 = 3,127.80/x
  3. Step 3: Cross multiply
    5,485.71x = 7,569.81 × 3,127.80
  4. Step 4: Simplify right side
    5,485.71x = 23,676,851.72
  5. Step 5: Solve for x
    x = 23,676,851.72/5,485.71
  6. Step 6: Final answer
    x = 4,316.10

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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.