Home / 9,878.92-13,636.34-5,688.84

Finding the Fourth Proportional to 9,878.92, 13,636.34 and 5,688.84

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Solution

The fourth proportional to 9,878.92, 13,636.34 and 5,688.84 is: 7,852.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,878.92 : 13,636.34 = 5,688.84 : x
  2. Step 2: Convert to fraction form
    9,878.92/13,636.34 = 5,688.84/x
  3. Step 3: Cross multiply
    9,878.92x = 13,636.34 × 5,688.84
  4. Step 4: Simplify right side
    9,878.92x = 77,574,956.45
  5. Step 5: Solve for x
    x = 77,574,956.45/9,878.92
  6. Step 6: Final answer
    x = 7,852.57

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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.