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Finding the Fourth Proportional to 2,917.83, 4,376.75 and 970.05

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Solution

The fourth proportional to 2,917.83, 4,376.75 and 970.05 is: 1,455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.83 : 4,376.75 = 970.05 : x
  2. Step 2: Convert to fraction form
    2,917.83/4,376.75 = 970.05/x
  3. Step 3: Cross multiply
    2,917.83x = 4,376.75 × 970.05
  4. Step 4: Simplify right side
    2,917.83x = 4,245,661.49
  5. Step 5: Solve for x
    x = 4,245,661.49/2,917.83
  6. Step 6: Final answer
    x = 1,455.08

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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.