Home / 6,427.60-9,631.80-5,448.40

Finding the Fourth Proportional to 6,427.60, 9,631.80 and 5,448.40

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Solution

The fourth proportional to 6,427.60, 9,631.80 and 5,448.40 is: 8,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,427.60 : 9,631.80 = 5,448.40 : x
  2. Step 2: Convert to fraction form
    6,427.60/9,631.80 = 5,448.40/x
  3. Step 3: Cross multiply
    6,427.60x = 9,631.80 × 5,448.40
  4. Step 4: Simplify right side
    6,427.60x = 52,477,899.12
  5. Step 5: Solve for x
    x = 52,477,899.12/6,427.60
  6. Step 6: Final answer
    x = 8,164.46

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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.