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Finding the Fourth Proportional to 4,056.88, 6,085.32 and 978.88

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Solution

The fourth proportional to 4,056.88, 6,085.32 and 978.88 is: 1,468.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,056.88 : 6,085.32 = 978.88 : x
  2. Step 2: Convert to fraction form
    4,056.88/6,085.32 = 978.88/x
  3. Step 3: Cross multiply
    4,056.88x = 6,085.32 × 978.88
  4. Step 4: Simplify right side
    4,056.88x = 5,956,798.04
  5. Step 5: Solve for x
    x = 5,956,798.04/4,056.88
  6. Step 6: Final answer
    x = 1,468.32

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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.