Home / 8,985.10-12,399.16-5,208.34

Finding the Fourth Proportional to 8,985.10, 12,399.16 and 5,208.34

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Solution

The fourth proportional to 8,985.10, 12,399.16 and 5,208.34 is: 7,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.10 : 12,399.16 = 5,208.34 : x
  2. Step 2: Convert to fraction form
    8,985.10/12,399.16 = 5,208.34/x
  3. Step 3: Cross multiply
    8,985.10x = 12,399.16 × 5,208.34
  4. Step 4: Simplify right side
    8,985.10x = 64,579,040.99
  5. Step 5: Solve for x
    x = 64,579,040.99/8,985.10
  6. Step 6: Final answer
    x = 7,187.35

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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.