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Finding the Fourth Proportional to 6,673.60, 9,208.20 and 4,020.40

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Solution

The fourth proportional to 6,673.60, 9,208.20 and 4,020.40 is: 5,547.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,673.60 : 9,208.20 = 4,020.40 : x
  2. Step 2: Convert to fraction form
    6,673.60/9,208.20 = 4,020.40/x
  3. Step 3: Cross multiply
    6,673.60x = 9,208.20 × 4,020.40
  4. Step 4: Simplify right side
    6,673.60x = 37,020,647.28
  5. Step 5: Solve for x
    x = 37,020,647.28/6,673.60
  6. Step 6: Final answer
    x = 5,547.33

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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.