Home / 8,929.10-12,319.72-5,572.45

Finding the Fourth Proportional to 8,929.10, 12,319.72 and 5,572.45

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Solution

The fourth proportional to 8,929.10, 12,319.72 and 5,572.45 is: 7,688.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.10 : 12,319.72 = 5,572.45 : x
  2. Step 2: Convert to fraction form
    8,929.10/12,319.72 = 5,572.45/x
  3. Step 3: Cross multiply
    8,929.10x = 12,319.72 × 5,572.45
  4. Step 4: Simplify right side
    8,929.10x = 68,651,023.71
  5. Step 5: Solve for x
    x = 68,651,023.71/8,929.10
  6. Step 6: Final answer
    x = 7,688.46

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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.