Home / 5,485.60-8,228.40-4,392.10

Finding the Fourth Proportional to 5,485.60, 8,228.40 and 4,392.10

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Solution

The fourth proportional to 5,485.60, 8,228.40 and 4,392.10 is: 6,588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.60 : 8,228.40 = 4,392.10 : x
  2. Step 2: Convert to fraction form
    5,485.60/8,228.40 = 4,392.10/x
  3. Step 3: Cross multiply
    5,485.60x = 8,228.40 × 4,392.10
  4. Step 4: Simplify right side
    5,485.60x = 36,139,955.64
  5. Step 5: Solve for x
    x = 36,139,955.64/5,485.60
  6. Step 6: Final answer
    x = 6,588.15

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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.