Home / 6,430.56-9,646.40-1,813.60

Finding the Fourth Proportional to 6,430.56, 9,646.40 and 1,813.60

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Solution

The fourth proportional to 6,430.56, 9,646.40 and 1,813.60 is: 2,720.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,430.56 : 9,646.40 = 1,813.60 : x
  2. Step 2: Convert to fraction form
    6,430.56/9,646.40 = 1,813.60/x
  3. Step 3: Cross multiply
    6,430.56x = 9,646.40 × 1,813.60
  4. Step 4: Simplify right side
    6,430.56x = 17,494,711.04
  5. Step 5: Solve for x
    x = 17,494,711.04/6,430.56
  6. Step 6: Final answer
    x = 2,720.56

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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.