Home / 7,931.10-11,890.65-4,038.30

Finding the Fourth Proportional to 7,931.10, 11,890.65 and 4,038.30

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Solution

The fourth proportional to 7,931.10, 11,890.65 and 4,038.30 is: 6,054.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.10 : 11,890.65 = 4,038.30 : x
  2. Step 2: Convert to fraction form
    7,931.10/11,890.65 = 4,038.30/x
  3. Step 3: Cross multiply
    7,931.10x = 11,890.65 × 4,038.30
  4. Step 4: Simplify right side
    7,931.10x = 48,018,011.90
  5. Step 5: Solve for x
    x = 48,018,011.90/7,931.10
  6. Step 6: Final answer
    x = 6,054.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.