Home / 7,985.12-11,017.08-4,627.76

Finding the Fourth Proportional to 7,985.12, 11,017.08 and 4,627.76

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Solution

The fourth proportional to 7,985.12, 11,017.08 and 4,627.76 is: 6,384.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.12 : 11,017.08 = 4,627.76 : x
  2. Step 2: Convert to fraction form
    7,985.12/11,017.08 = 4,627.76/x
  3. Step 3: Cross multiply
    7,985.12x = 11,017.08 × 4,627.76
  4. Step 4: Simplify right side
    7,985.12x = 50,984,347.06
  5. Step 5: Solve for x
    x = 50,984,347.06/7,985.12
  6. Step 6: Final answer
    x = 6,384.92

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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.