Home / 7,988.64-11,009.12-5,746.56

Finding the Fourth Proportional to 7,988.64, 11,009.12 and 5,746.56

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Solution

The fourth proportional to 7,988.64, 11,009.12 and 5,746.56 is: 7,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.64 : 11,009.12 = 5,746.56 : x
  2. Step 2: Convert to fraction form
    7,988.64/11,009.12 = 5,746.56/x
  3. Step 3: Cross multiply
    7,988.64x = 11,009.12 × 5,746.56
  4. Step 4: Simplify right side
    7,988.64x = 63,264,568.63
  5. Step 5: Solve for x
    x = 63,264,568.63/7,988.64
  6. Step 6: Final answer
    x = 7,919.32

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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.