Home / 3,688.07-5,088.08-2,115.32

Finding the Fourth Proportional to 3,688.07, 5,088.08 and 2,115.32

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Solution

The fourth proportional to 3,688.07, 5,088.08 and 2,115.32 is: 2,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.07 : 5,088.08 = 2,115.32 : x
  2. Step 2: Convert to fraction form
    3,688.07/5,088.08 = 2,115.32/x
  3. Step 3: Cross multiply
    3,688.07x = 5,088.08 × 2,115.32
  4. Step 4: Simplify right side
    3,688.07x = 10,762,897.23
  5. Step 5: Solve for x
    x = 10,762,897.23/3,688.07
  6. Step 6: Final answer
    x = 2,918.30

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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.