Home / 9,990.27-14,985.40-2,970.25

Finding the Fourth Proportional to 9,990.27, 14,985.40 and 2,970.25

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Solution

The fourth proportional to 9,990.27, 14,985.40 and 2,970.25 is: 4,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.27 : 14,985.40 = 2,970.25 : x
  2. Step 2: Convert to fraction form
    9,990.27/14,985.40 = 2,970.25/x
  3. Step 3: Cross multiply
    9,990.27x = 14,985.40 × 2,970.25
  4. Step 4: Simplify right side
    9,990.27x = 44,510,421.81
  5. Step 5: Solve for x
    x = 44,510,421.81/9,990.27
  6. Step 6: Final answer
    x = 4,455.38

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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.