Home / 7,878.20-10,875.44-4,692.56

Finding the Fourth Proportional to 7,878.20, 10,875.44 and 4,692.56

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Solution

The fourth proportional to 7,878.20, 10,875.44 and 4,692.56 is: 6,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.20 : 10,875.44 = 4,692.56 : x
  2. Step 2: Convert to fraction form
    7,878.20/10,875.44 = 4,692.56/x
  3. Step 3: Cross multiply
    7,878.20x = 10,875.44 × 4,692.56
  4. Step 4: Simplify right side
    7,878.20x = 51,033,612.08
  5. Step 5: Solve for x
    x = 51,033,612.08/7,878.20
  6. Step 6: Final answer
    x = 6,477.83

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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.