Home / 5,420.69-7,480.47-3,030.72

Finding the Fourth Proportional to 5,420.69, 7,480.47 and 3,030.72

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Solution

The fourth proportional to 5,420.69, 7,480.47 and 3,030.72 is: 4,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.69 : 7,480.47 = 3,030.72 : x
  2. Step 2: Convert to fraction form
    5,420.69/7,480.47 = 3,030.72/x
  3. Step 3: Cross multiply
    5,420.69x = 7,480.47 × 3,030.72
  4. Step 4: Simplify right side
    5,420.69x = 22,671,210.04
  5. Step 5: Solve for x
    x = 22,671,210.04/5,420.69
  6. Step 6: Final answer
    x = 4,182.35

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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.