Home / 8,905.18-12,281.10-5,714.80

Finding the Fourth Proportional to 8,905.18, 12,281.10 and 5,714.80

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Solution

The fourth proportional to 8,905.18, 12,281.10 and 5,714.80 is: 7,881.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.18 : 12,281.10 = 5,714.80 : x
  2. Step 2: Convert to fraction form
    8,905.18/12,281.10 = 5,714.80/x
  3. Step 3: Cross multiply
    8,905.18x = 12,281.10 × 5,714.80
  4. Step 4: Simplify right side
    8,905.18x = 70,184,030.28
  5. Step 5: Solve for x
    x = 70,184,030.28/8,905.18
  6. Step 6: Final answer
    x = 7,881.26

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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.