Home / 7,987.08-11,020.80-4,630.32

Finding the Fourth Proportional to 7,987.08, 11,020.80 and 4,630.32

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Solution

The fourth proportional to 7,987.08, 11,020.80 and 4,630.32 is: 6,389.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.08 : 11,020.80 = 4,630.32 : x
  2. Step 2: Convert to fraction form
    7,987.08/11,020.80 = 4,630.32/x
  3. Step 3: Cross multiply
    7,987.08x = 11,020.80 × 4,630.32
  4. Step 4: Simplify right side
    7,987.08x = 51,029,830.66
  5. Step 5: Solve for x
    x = 51,029,830.66/7,987.08
  6. Step 6: Final answer
    x = 6,389.05

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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.