Home / 5,346.81-7,378.70-2,988.90

Finding the Fourth Proportional to 5,346.81, 7,378.70 and 2,988.90

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Solution

The fourth proportional to 5,346.81, 7,378.70 and 2,988.90 is: 4,124.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,346.81 : 7,378.70 = 2,988.90 : x
  2. Step 2: Convert to fraction form
    5,346.81/7,378.70 = 2,988.90/x
  3. Step 3: Cross multiply
    5,346.81x = 7,378.70 × 2,988.90
  4. Step 4: Simplify right side
    5,346.81x = 22,054,181.49
  5. Step 5: Solve for x
    x = 22,054,181.49/5,346.81
  6. Step 6: Final answer
    x = 4,124.74

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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.