Home / 8,970.14-12,378.74-4,991.62

Finding the Fourth Proportional to 8,970.14, 12,378.74 and 4,991.62

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Solution

The fourth proportional to 8,970.14, 12,378.74 and 4,991.62 is: 6,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.14 : 12,378.74 = 4,991.62 : x
  2. Step 2: Convert to fraction form
    8,970.14/12,378.74 = 4,991.62/x
  3. Step 3: Cross multiply
    8,970.14x = 12,378.74 × 4,991.62
  4. Step 4: Simplify right side
    8,970.14x = 61,789,966.16
  5. Step 5: Solve for x
    x = 61,789,966.16/8,970.14
  6. Step 6: Final answer
    x = 6,888.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.