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Finding the Fourth Proportional to 9,871.70, 14,802.15 and 4,021.70

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Solution

The fourth proportional to 9,871.70, 14,802.15 and 4,021.70 is: 6,030.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.70 : 14,802.15 = 4,021.70 : x
  2. Step 2: Convert to fraction form
    9,871.70/14,802.15 = 4,021.70/x
  3. Step 3: Cross multiply
    9,871.70x = 14,802.15 × 4,021.70
  4. Step 4: Simplify right side
    9,871.70x = 59,529,806.66
  5. Step 5: Solve for x
    x = 59,529,806.66/9,871.70
  6. Step 6: Final answer
    x = 6,030.35

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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.