Home / 7,915.06-10,923-4,378.50

Finding the Fourth Proportional to 7,915.06, 10,923 and 4,378.50

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Solution

The fourth proportional to 7,915.06, 10,923 and 4,378.50 is: 6,042.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.06 : 10,923 = 4,378.50 : x
  2. Step 2: Convert to fraction form
    7,915.06/10,923 = 4,378.50/x
  3. Step 3: Cross multiply
    7,915.06x = 10,923 × 4,378.50
  4. Step 4: Simplify right side
    7,915.06x = 47,826,355.50
  5. Step 5: Solve for x
    x = 47,826,355.50/7,915.06
  6. Step 6: Final answer
    x = 6,042.45

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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.