Home / 7,114.32-10,669.86-1,920.60

Finding the Fourth Proportional to 7,114.32, 10,669.86 and 1,920.60

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Solution

The fourth proportional to 7,114.32, 10,669.86 and 1,920.60 is: 2,880.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.32 : 10,669.86 = 1,920.60 : x
  2. Step 2: Convert to fraction form
    7,114.32/10,669.86 = 1,920.60/x
  3. Step 3: Cross multiply
    7,114.32x = 10,669.86 × 1,920.60
  4. Step 4: Simplify right side
    7,114.32x = 20,492,533.12
  5. Step 5: Solve for x
    x = 20,492,533.12/7,114.32
  6. Step 6: Final answer
    x = 2,880.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.