Home / 5,428.09-7,482.59-4,247.11

Finding the Fourth Proportional to 5,428.09, 7,482.59 and 4,247.11

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Solution

The fourth proportional to 5,428.09, 7,482.59 and 4,247.11 is: 5,854.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.09 : 7,482.59 = 4,247.11 : x
  2. Step 2: Convert to fraction form
    5,428.09/7,482.59 = 4,247.11/x
  3. Step 3: Cross multiply
    5,428.09x = 7,482.59 × 4,247.11
  4. Step 4: Simplify right side
    5,428.09x = 31,779,345.40
  5. Step 5: Solve for x
    x = 31,779,345.40/5,428.09
  6. Step 6: Final answer
    x = 5,854.61

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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.