Home / 9,120.85-12,586.77-4,929.10

Finding the Fourth Proportional to 9,120.85, 12,586.77 and 4,929.10

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Solution

The fourth proportional to 9,120.85, 12,586.77 and 4,929.10 is: 6,802.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.85 : 12,586.77 = 4,929.10 : x
  2. Step 2: Convert to fraction form
    9,120.85/12,586.77 = 4,929.10/x
  3. Step 3: Cross multiply
    9,120.85x = 12,586.77 × 4,929.10
  4. Step 4: Simplify right side
    9,120.85x = 62,041,448.01
  5. Step 5: Solve for x
    x = 62,041,448.01/9,120.85
  6. Step 6: Final answer
    x = 6,802.16

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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.