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Finding the Fourth Proportional to 4,891.98, 7,337.88 and 1,970.21

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Solution

The fourth proportional to 4,891.98, 7,337.88 and 1,970.21 is: 2,955.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.98 : 7,337.88 = 1,970.21 : x
  2. Step 2: Convert to fraction form
    4,891.98/7,337.88 = 1,970.21/x
  3. Step 3: Cross multiply
    4,891.98x = 7,337.88 × 1,970.21
  4. Step 4: Simplify right side
    4,891.98x = 14,457,182.90
  5. Step 5: Solve for x
    x = 14,457,182.90/4,891.98
  6. Step 6: Final answer
    x = 2,955.28

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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.