Home / 7,915.19-10,922.65-4,378.32

Finding the Fourth Proportional to 7,915.19, 10,922.65 and 4,378.32

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Solution

The fourth proportional to 7,915.19, 10,922.65 and 4,378.32 is: 6,041.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.19 : 10,922.65 = 4,378.32 : x
  2. Step 2: Convert to fraction form
    7,915.19/10,922.65 = 4,378.32/x
  3. Step 3: Cross multiply
    7,915.19x = 10,922.65 × 4,378.32
  4. Step 4: Simplify right side
    7,915.19x = 47,822,846.00
  5. Step 5: Solve for x
    x = 47,822,846.00/7,915.19
  6. Step 6: Final answer
    x = 6,041.91

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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.