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Finding the Fourth Proportional to 2,985.98, 4,477.90 and 877.01

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Solution

The fourth proportional to 2,985.98, 4,477.90 and 877.01 is: 1,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.98 : 4,477.90 = 877.01 : x
  2. Step 2: Convert to fraction form
    2,985.98/4,477.90 = 877.01/x
  3. Step 3: Cross multiply
    2,985.98x = 4,477.90 × 877.01
  4. Step 4: Simplify right side
    2,985.98x = 3,927,163.08
  5. Step 5: Solve for x
    x = 3,927,163.08/2,985.98
  6. Step 6: Final answer
    x = 1,315.20

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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.