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Finding the Fourth Proportional to 5,389.93, 8,085.12 and 1,880.29

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Solution

The fourth proportional to 5,389.93, 8,085.12 and 1,880.29 is: 2,820.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.93 : 8,085.12 = 1,880.29 : x
  2. Step 2: Convert to fraction form
    5,389.93/8,085.12 = 1,880.29/x
  3. Step 3: Cross multiply
    5,389.93x = 8,085.12 × 1,880.29
  4. Step 4: Simplify right side
    5,389.93x = 15,202,362.50
  5. Step 5: Solve for x
    x = 15,202,362.50/5,389.93
  6. Step 6: Final answer
    x = 2,820.51

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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.