Home / 4,947.40-7,421.10-4,870.60

Finding the Fourth Proportional to 4,947.40, 7,421.10 and 4,870.60

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Solution

The fourth proportional to 4,947.40, 7,421.10 and 4,870.60 is: 7,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,947.40 : 7,421.10 = 4,870.60 : x
  2. Step 2: Convert to fraction form
    4,947.40/7,421.10 = 4,870.60/x
  3. Step 3: Cross multiply
    4,947.40x = 7,421.10 × 4,870.60
  4. Step 4: Simplify right side
    4,947.40x = 36,145,209.66
  5. Step 5: Solve for x
    x = 36,145,209.66/4,947.40
  6. Step 6: Final answer
    x = 7,305.90

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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.