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Finding the Fourth Proportional to 2,919.52, 4,377.66 and 970.66

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Solution

The fourth proportional to 2,919.52, 4,377.66 and 970.66 is: 1,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.52 : 4,377.66 = 970.66 : x
  2. Step 2: Convert to fraction form
    2,919.52/4,377.66 = 970.66/x
  3. Step 3: Cross multiply
    2,919.52x = 4,377.66 × 970.66
  4. Step 4: Simplify right side
    2,919.52x = 4,249,219.46
  5. Step 5: Solve for x
    x = 4,249,219.46/2,919.52
  6. Step 6: Final answer
    x = 1,455.45

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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.