Home / 5,085.64-7,020.32-3,688.12

Finding the Fourth Proportional to 5,085.64, 7,020.32 and 3,688.12

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Solution

The fourth proportional to 5,085.64, 7,020.32 and 3,688.12 is: 5,091.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.64 : 7,020.32 = 3,688.12 : x
  2. Step 2: Convert to fraction form
    5,085.64/7,020.32 = 3,688.12/x
  3. Step 3: Cross multiply
    5,085.64x = 7,020.32 × 3,688.12
  4. Step 4: Simplify right side
    5,085.64x = 25,891,782.60
  5. Step 5: Solve for x
    x = 25,891,782.60/5,085.64
  6. Step 6: Final answer
    x = 5,091.16

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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.