Home / 6,289.12-9,430.02-1,905.40

Finding the Fourth Proportional to 6,289.12, 9,430.02 and 1,905.40

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Solution

The fourth proportional to 6,289.12, 9,430.02 and 1,905.40 is: 2,856.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.12 : 9,430.02 = 1,905.40 : x
  2. Step 2: Convert to fraction form
    6,289.12/9,430.02 = 1,905.40/x
  3. Step 3: Cross multiply
    6,289.12x = 9,430.02 × 1,905.40
  4. Step 4: Simplify right side
    6,289.12x = 17,967,960.11
  5. Step 5: Solve for x
    x = 17,967,960.11/6,289.12
  6. Step 6: Final answer
    x = 2,856.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.