Home / 5,280.71-7,920.74-1,583.03

Finding the Fourth Proportional to 5,280.71, 7,920.74 and 1,583.03

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Solution

The fourth proportional to 5,280.71, 7,920.74 and 1,583.03 is: 2,374.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.71 : 7,920.74 = 1,583.03 : x
  2. Step 2: Convert to fraction form
    5,280.71/7,920.74 = 1,583.03/x
  3. Step 3: Cross multiply
    5,280.71x = 7,920.74 × 1,583.03
  4. Step 4: Simplify right side
    5,280.71x = 12,538,792.80
  5. Step 5: Solve for x
    x = 12,538,792.80/5,280.71
  6. Step 6: Final answer
    x = 2,374.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.