Home / 8,987.30-12,401.93-5,210.18

Finding the Fourth Proportional to 8,987.30, 12,401.93 and 5,210.18

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Solution

The fourth proportional to 8,987.30, 12,401.93 and 5,210.18 is: 7,189.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.30 : 12,401.93 = 5,210.18 : x
  2. Step 2: Convert to fraction form
    8,987.30/12,401.93 = 5,210.18/x
  3. Step 3: Cross multiply
    8,987.30x = 12,401.93 × 5,210.18
  4. Step 4: Simplify right side
    8,987.30x = 64,616,331.68
  5. Step 5: Solve for x
    x = 64,616,331.68/8,987.30
  6. Step 6: Final answer
    x = 7,189.74

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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.