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Finding the Fourth Proportional to 7,547.13, 10,421.25 and 4,899.06

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Solution

The fourth proportional to 7,547.13, 10,421.25 and 4,899.06 is: 6,764.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,547.13 : 10,421.25 = 4,899.06 : x
  2. Step 2: Convert to fraction form
    7,547.13/10,421.25 = 4,899.06/x
  3. Step 3: Cross multiply
    7,547.13x = 10,421.25 × 4,899.06
  4. Step 4: Simplify right side
    7,547.13x = 51,054,329.03
  5. Step 5: Solve for x
    x = 51,054,329.03/7,547.13
  6. Step 6: Final answer
    x = 6,764.73

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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.