Home / 6,987.20-10,479.60-2,602.40

Finding the Fourth Proportional to 6,987.20, 10,479.60 and 2,602.40

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Solution

The fourth proportional to 6,987.20, 10,479.60 and 2,602.40 is: 3,903.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.20 : 10,479.60 = 2,602.40 : x
  2. Step 2: Convert to fraction form
    6,987.20/10,479.60 = 2,602.40/x
  3. Step 3: Cross multiply
    6,987.20x = 10,479.60 × 2,602.40
  4. Step 4: Simplify right side
    6,987.20x = 27,272,111.04
  5. Step 5: Solve for x
    x = 27,272,111.04/6,987.20
  6. Step 6: Final answer
    x = 3,903.15

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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.