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Finding the Fourth Proportional to 9,564.90, 14,348.70 and 2,990.40

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Solution

The fourth proportional to 9,564.90, 14,348.70 and 2,990.40 is: 4,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,564.90 : 14,348.70 = 2,990.40 : x
  2. Step 2: Convert to fraction form
    9,564.90/14,348.70 = 2,990.40/x
  3. Step 3: Cross multiply
    9,564.90x = 14,348.70 × 2,990.40
  4. Step 4: Simplify right side
    9,564.90x = 42,908,352.48
  5. Step 5: Solve for x
    x = 42,908,352.48/9,564.90
  6. Step 6: Final answer
    x = 4,486.02

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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.