Home / 9,175.02-12,655.08-5,640.18

Finding the Fourth Proportional to 9,175.02, 12,655.08 and 5,640.18

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Solution

The fourth proportional to 9,175.02, 12,655.08 and 5,640.18 is: 7,779.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,175.02 : 12,655.08 = 5,640.18 : x
  2. Step 2: Convert to fraction form
    9,175.02/12,655.08 = 5,640.18/x
  3. Step 3: Cross multiply
    9,175.02x = 12,655.08 × 5,640.18
  4. Step 4: Simplify right side
    9,175.02x = 71,376,929.11
  5. Step 5: Solve for x
    x = 71,376,929.11/9,175.02
  6. Step 6: Final answer
    x = 7,779.48

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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.