Home / 5,285.78-7,287.47-4,547.67

Finding the Fourth Proportional to 5,285.78, 7,287.47 and 4,547.67

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Solution

The fourth proportional to 5,285.78, 7,287.47 and 4,547.67 is: 6,269.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.78 : 7,287.47 = 4,547.67 : x
  2. Step 2: Convert to fraction form
    5,285.78/7,287.47 = 4,547.67/x
  3. Step 3: Cross multiply
    5,285.78x = 7,287.47 × 4,547.67
  4. Step 4: Simplify right side
    5,285.78x = 33,140,985.96
  5. Step 5: Solve for x
    x = 33,140,985.96/5,285.78
  6. Step 6: Final answer
    x = 6,269.84

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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.