Home / 8,988.10-12,403.30-5,211.34

Finding the Fourth Proportional to 8,988.10, 12,403.30 and 5,211.34

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Solution

The fourth proportional to 8,988.10, 12,403.30 and 5,211.34 is: 7,191.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.10 : 12,403.30 = 5,211.34 : x
  2. Step 2: Convert to fraction form
    8,988.10/12,403.30 = 5,211.34/x
  3. Step 3: Cross multiply
    8,988.10x = 12,403.30 × 5,211.34
  4. Step 4: Simplify right side
    8,988.10x = 64,637,813.42
  5. Step 5: Solve for x
    x = 64,637,813.42/8,988.10
  6. Step 6: Final answer
    x = 7,191.49

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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.