Home / 9,000.90-12,420.95-4,912.54

Finding the Fourth Proportional to 9,000.90, 12,420.95 and 4,912.54

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Solution

The fourth proportional to 9,000.90, 12,420.95 and 4,912.54 is: 6,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.90 : 12,420.95 = 4,912.54 : x
  2. Step 2: Convert to fraction form
    9,000.90/12,420.95 = 4,912.54/x
  3. Step 3: Cross multiply
    9,000.90x = 12,420.95 × 4,912.54
  4. Step 4: Simplify right side
    9,000.90x = 61,018,389.15
  5. Step 5: Solve for x
    x = 61,018,389.15/9,000.90
  6. Step 6: Final answer
    x = 6,779.15

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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.